Base de CVEs

Vulnerabilidades publicadas, com severidade, exploração conhecida e fontes oficiais.

294 resultado(s)

Exportar esta busca: RSS · CSV · STIX

CVE-2026-40324 Crítica · 9.1 CWE-674 17/04/2026

Hot Chocolate: recursão não controlada no parser GraphQL causa negação de serviço

O Hot Chocolate é um servidor GraphQL de código aberto. Nas versões anteriores a 12.22.7, 13.9.16, 14.3.1 e 15.1.14, o parser recursivo de descida Utf8GraphQLParser não possui limite de profundidade de recursão. Um documento GraphQL elaborado com conjuntos de seleção, objetos de valor, listas de valores ou tipos de lista profundamente aninhados pode disparar uma StackOverflowException com payloads a partir de 40 KB. Como a StackOverflowException não pode ser capturada no .NET (desde o .NET 2.0), todo o processo do worker é encerrado imediatamente. Todas as requisições HTTP em andamento, tarefas IHostedService em segundo plano e assinaturas WebSocket abertas nesse worker são interrompidas. O orquestrador (Kubernetes, IIS etc.) precisa reiniciar o processo. Isso ocorre antes que quaisquer regras de validação sejam executadas — MaxExecutionDepth, analisadores de complexidade, listas de permissão de consultas persistidas e implementações personalizadas de IDocumentValidatorRule não conseguem impedir a falha, porque Utf8GraphQLParser.Parse é invocado antes da validação. O limite MaxAllowedFields=2048 não ajuda, pois os payloads que causam a falha contêm poucos campos. A correção nas versões 12.22.7, 13.9.16, 14.3.1 e 15.1.14 adiciona a opção MaxAllowedRecursionDepth a ParserOptions com um padrão seguro e aplica o limite em todos os métodos recursivos do parser (ParseSelectionSet, ParseValueLiteral, ParseObject, ParseList, ParseTypeReference etc.). Quando o limite é excedido, é lançada uma SyntaxException capturável, em vez de estourar a pilha. Não há solução de contorno no nível da aplicação. A StackOverflowException não pode ser capturada no .NET. A única mitigação é atualizar para uma versão corrigida. Operadores podem reduzir (mas não eliminar) o risco limitando o tamanho do corpo das requisições HTTP no proxy reverso ou no balanceador de carga, embora o menor payload que causa a falha (40 KB) esteja bem abaixo da maioria dos limites padrão e seja altamente compactável (algumas centenas de bytes com gzip).

CVE-2026-33947 Média · 5.5 CWE-674 13/04/2026

jq: Unbounded Recursion in jv_setpath(), jv_getpath() and delpaths_sorted()

jq is a command-line JSON processor. In versions 1.8.1 and below, functions jv_setpath(), jv_getpath(), and delpaths_sorted() in jq's src/jv_aux.c use unbounded recursion whose depth is controlled by the length of a caller-supplied path array, with no depth limit enforced. An attacker can supply a JSON document containing a flat array of ~65,000 integers (~200 KB) that, when used as a path argument by a trusted jq filter, exhausts the C call stack and crashes the process with a segmentation fault (SIGSEGV). This bypass works because the existing MAX_PARSING_DEPTH (10,000) limit only protects the JSON parser, not runtime path operations where arrays can be programmatically constructed to arbitrary lengths. The impact is denial of service (unrecoverable crash) affecting any application or service that processes untrusted JSON input through jq's setpath, getpath, or delpaths builtins. This issue has been addressed in commit fb59f1491058d58bdc3e8dd28f1773d1ac690a1f.

CVE-2026-33908 Alta · 7.5 CWE-674 13/04/2026

ImageMagick is vulnerable to Stack Overflow in DestroyXMLTree()

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, Magick frees the memory of the XML tree via the `DestroyXMLTree()` function; however, this process is executed recursively with no depth limit imposed. When Magick processes an XML file with deeply nested structures, it will exhaust the stack memory, resulting in a Denial of Service (DoS) attack. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

CVE-2026-33902 Média · 5.5 CWE-674 13/04/2026

ImageMagick: Stack Overflow via Recursive FX Expression Parsing

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a stack overflow vulnerability in ImageMagick's FX expression parser allows an attacker to crash the process by providing a deeply nested expression. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

CVE-2026-39376 Alta · 7.5 CWE-674 07/04/2026

FastFeedParser has an infinite redirect loop DoS via meta-refresh chain

FastFeedParser is a high performance RSS, Atom and RDF parser. Prior to 0.5.10, when parse() fetches a URL that returns an HTML page containing a <meta http-equiv="refresh"> tag, it recursively calls itself with the redirect URL — with no depth limit, no visited-URL deduplication, and no redirect count cap. An attacker-controlled server that returns an infinite chain of HTML meta-refresh responses causes unbounded recursion, exhausting the Python call stack and crashing the process. This vulnerability can also be chained with the companion SSRF issue to reach internal network targets after bypassing the initial URL check. This vulnerability is fixed in 0.5.10.

CVE-2026-34211 Alta · 7.5 CWE-674 06/04/2026

SandboxJS: Stack overflow DoS via deeply nested expressions in recursive descent parser

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, the @nyariv/sandboxjs parser contains unbounded recursion in the restOfExp function and the lispify/lispifyExpr call chain. An attacker can crash any Node.js process that parses untrusted input by supplying deeply nested expressions (e.g., ~2000 nested parentheses), causing a RangeError: Maximum call stack size exceeded that terminates the process. This vulnerability is fixed in 0.8.36.

CVE-2026-3778 Média · 5.5 CWE-674 31/03/2026

Stack exhaustion caused by cyclic references in Foxit PDF Editor/Reader

The application does not detect or guard against cyclic PDF object references while handling JavaScript in PDF. When pages and annotations are crafted that reference each other in a loop, passing the document to APIs (e.g., SOAP) that perform deep traversal can cause uncontrolled recursion, stack exhaustion, and application crashes.

CVE-2026-34536 Média · 5.5 CWE-674 31/03/2026

iccDEV: SO in SIccCalcOp::ArgsUsed()

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, a crafted ICC profile can trigger a stack overflow (SO) in SIccCalcOp::ArgsUsed(). The issue is observable under AddressSanitizer as a stack-overflow when iccApplyProfiles processes a malicious profile, with the crash occurring while computing argument usage during calculator underflow/overflow checks. This issue has been patched in version 2.3.1.6.

CVE-2026-33532 Média · 4.3 CWE-674 26/03/2026

yaml is vulnerable to Stack Overflow via deeply nested YAML collections

`yaml` is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of `yaml` on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with a small payload (~2–10 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch YAML-specific errors will encounter an unexpected exception type. Depending on the host application's exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack, approximately 1,000–5,000 levels of nesting (2–10 KB input) exhaust the call stack. The exact threshold is environment-dependent (Node.js version, stack size, call stack depth at invocation). Note: the library's `Parser` (CST phase) uses a stack-based iterative approach and is not affected. Only the compose/resolve phase uses actual call-stack recursion. All three public parsing APIs are affected: `YAML.parse()`, `YAML.parseDocument()`, and `YAML.parseAllDocuments()`. Versions 1.10.3 and 2.8.3 contain a patch.

CVE-2026-23292 Média · 5.5 CWE-674 25/03/2026

scsi: target: Fix recursive locking in __configfs_open_file()

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix recursive locking in __configfs_open_file() In flush_write_buffer, &p->frag_sem is acquired and then the loaded store function is called, which, here, is target_core_item_dbroot_store(). This function called filp_open(), following which these functions were called (in reverse order), according to the call trace: down_read __configfs_open_file do_dentry_open vfs_open do_open path_openat do_filp_open file_open_name filp_open target_core_item_dbroot_store flush_write_buffer configfs_write_iter target_core_item_dbroot_store() tries to validate the new file path by trying to open the file path provided to it; however, in this case, the bug report shows: db_root: not a directory: /sys/kernel/config/target/dbroot indicating that the same configfs file was tried to be opened, on which it is currently working on. Thus, it is trying to acquire frag_sem semaphore of the same file of which it already holds the semaphore obtained in flush_write_buffer(), leading to acquiring the semaphore in a nested manner and a possibility of recursive locking. Fix this by modifying target_core_item_dbroot_store() to use kern_path() instead of filp_open() to avoid opening the file using filesystem-specific function __configfs_open_file(), and further modifying it to make this fix compatible.

CVE-2026-33508 Alta · 7.5 CWE-674 24/03/2026

Parse Server: LiveQuery subscription query depth bypass

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

CVE-2026-33498 Alta · 7.5 CWE-674 24/03/2026

Parse Server: Query condition depth bypass via pre-validation transform pipeline

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.55 and 9.6.0-alpha.44, an attacker can send an unauthenticated HTTP request with a deeply nested query containing logical operators to permanently hang the Parse Server process. The server becomes completely unresponsive and must be manually restarted. This is a bypass of the fix for CVE-2026-32944. This issue has been patched in versions 8.6.55 and 9.6.0-alpha.44.

CVE-2026-33320 Média · 6.2 CWE-674 23/03/2026

Dasel has unbounded YAML alias expansion in dasel leads to CPU/memory denial of service

Dasel is a command-line tool and library for querying, modifying, and transforming data structures. Starting in version 3.0.0 and prior to version 3.3.1, Dasel's YAML reader allows an attacker who can supply YAML for processing to trigger extreme CPU and memory consumption. The issue is in the library's own `UnmarshalYAML` implementation, which manually resolves alias nodes by recursively following `yaml.Node.Alias` pointers without any expansion budget, bypassing go-yaml v4's built-in alias expansion limit. Version 3.3.2 contains a patch for the issue.

CVE-2026-26209 Alta · 7.5 CWE-674 23/03/2026

cbor2 has a Denial of Service via Uncontrolled Recursion in cbor2.loads

cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization format. Versions prior to 5.9.0 are vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding deeply nested CBOR structures. This vulnerability affects both the pure Python implementation and the C extension `_cbor2`. The C extension relies on Python's internal recursion limits `Py_EnterRecursiveCall` rather than a data-driven depth limit, meaning it still raises `RecursionError` and crashes the worker process when the limit is hit. While the library handles moderate nesting levels, it lacks a hard depth limit. An attacker can supply a crafted CBOR payload containing approximately 100,000 nested arrays `0x81`. When `cbor2.loads()` attempts to parse this, it hits the Python interpreter's maximum recursion depth or exhausts the stack, causing the process to crash with a `RecursionError`. Because the library does not enforce its own limits, it allows an external attacker to exhaust the host application's stack resource. In many web application servers (e.g., Gunicorn, Uvicorn) or task queues (Celery), an unhandled `RecursionError` terminates the worker process immediately. By sending a stream of these small (<100KB) malicious packets, an attacker can repeatedly crash worker processes, resulting in a complete Denial of Service for the application. Version 5.9.0 patches the issue.

CVE-2026-23276 Média · 5.5 CWE-674 20/03/2026

net: add xmit recursion limit to tunnel xmit functions

CVE-2026-32933 Alta · 7.5 CWE-674 20/03/2026

AutoMapper Vulnerable to Denial of Service (DoS) via Uncontrolled Recursion

AutoMapper is a convention-based object-object mapper in .NET. Versions prior to 15.1.1 and 16.1.1 are vulnerable to a Denial of Service (DoS) attack. When mapping deeply nested object graphs, the library uses recursive method calls without enforcing a default maximum depth limit. This allows an attacker to provide a specially crafted object graph that exhausts the thread's stack memory, triggering a `StackOverflowException` and causing the entire application process to terminate. Versions 15.1.1 and 16.1.1 fix the issue.

CVE-2026-32944 Alta · 7.5 CWE-674 18/03/2026

Parse Server crash via deeply nested query condition operators

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.21 and 8.6.45, an unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Starting in version 9.6.0-alpha.21 and 8.6.45, a depth limit for query condition operator nesting has been added via the `requestComplexity.queryDepth` server option. The option is disabled by default to avoid a breaking change. To mitigate, upgrade and set the option to a value appropriate for your app. No known workarounds are available.

CVE-2026-30922 Alta · 7.5 CWE-674 18/03/2026

pyasn1 Vulnerable to Denial of Service via Unbounded Recursion

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the `pyasn1` library is vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested `SEQUENCE` (`0x30`) or `SET` (`0x31`) tags with "Indefinite Length" (`0x80`) markers. This forces the decoder to recursively call itself until the Python interpreter crashes with a `RecursionError` or consumes all available memory (OOM), crashing the host application. This is a distinct vulnerability from CVE-2026-23490 (which addressed integer overflows in OID decoding). The fix for CVE-2026-23490 (`MAX_OID_ARC_CONTINUATION_OCTETS`) does not mitigate this recursion issue. Version 0.6.3 fixes this specific issue.

CVE-2026-4224 Alta · 7.5 CWE-674 16/03/2026

Stack overflow parsing XML with deeply nested DTD content models

When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

CVE-2026-31899 Alta · 7.5 CWE-674 13/03/2026

CairoSVG vulnerable to Exponential DoS via recursive <use> element amplification

CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive <use> element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.

CVE-2026-32141 Alta · 7.5 CWE-674 12/03/2026

flatted: Unbounded recursion DoS in parse() revive phase

flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow that crashes the Node.js process. This vulnerability is fixed in 3.4.0.

CVE-2026-1069 Alta · 7.5 CWE-674 11/03/2026

Uncontrolled Recursion in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9 before 18.9.2 that could have allowed an unauthenticated user to cause a denial of service by sending specially crafted GraphQL requests due to uncontrolled recursion under certain circumstances.

CVE-2026-29076 Média · 5.9 CWE-674 07/03/2026

cpp-httplib: Stack Overflow Denial of Service (DoS) via std::regex in multipart filename parsing

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex (libstdc++) to parse RFC 5987 encoded filename* values in multipart Content-Disposition headers. The regex engine in libstdc++ implements backtracking via deep recursion, consuming one stack frame per input character. An attacker can send a single HTTP POST request with a crafted filename* parameter that causes uncontrolled stack growth, resulting in a stack overflow (SIGSEGV) that crashes the server process. This issue has been patched in version 0.37.0.

CVE-2026-25048 Alta · 7.5 CWE-674 05/03/2026

xgrammar: Multi-layer nesting causes DoS

xgrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to version 0.1.32, the multi-level nested syntax caused a segmentation fault (core dumped). This issue has been patched in version 0.1.32.

CVE-2026-3520 Alta · 7.5 CWE-674 04/03/2026

Multer vulnerable to Denial of Service via uncontrolled recursion

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.