Vulnerabilidades de Rubygems

CVE-2026-107399 Média · 6.8 CWE-200 08/10/2026

Mechanize sends credential headers to another origin after a meta refresh

The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize applies no origin trust boundary in Mechanize::HTTP::Agent#response_follow_meta_refresh when Mechanize#follow_meta_refresh is enabled. A page containing a meta refresh to another origin causes headers configured through Mechanize#request_headers= to be reapplied to the refresh request, allowing an attacker who controls content in the crawl to capture bearer tokens or session cookies. The default configuration is not affected because follow_meta_refresh is false, and the exposure is limited to caller-supplied default headers. This issue is fixed in version 2.14.1.

CVE-2025-66568 Crítica · 9.1 CWE-347 09/12/2025

ruby-saml Libxml2 Canonicalization errors can bypass Digest/Signature validation

The ruby-saml library implements the client side of an SAML authorization. Versions up to and including 1.12.4, are vulnerable to authentication bypass through the libxml2 canonicalization process used by Nokogiri for document transformation, which allows an attacker to execute a Signature Wrapping attack. When libxml2’s canonicalization is invoked on an invalid XML input, it may return an empty string rather than a canonicalized node. ruby-saml then proceeds to compute the DigestValue over this empty string, treating it as if canonicalization succeeded. This issue is fixed in version 1.18.0.

CVE-2025-66567 Crítica · 9.1 CWE-347 09/12/2025

ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)

The ruby-saml library is for implementing the client side of a SAML authorization. ruby-saml versions up to and including 1.12.4 contain an authentication bypass vulnerability due to an incomplete fix for CVE-2025-25292. ReXML and Nokogiri parse XML differently, generating entirely different document structures from the same input. This allows an attacker to execute a Signature Wrapping attack. This issue is fixed in version 1.18.0.

CVE-2025-25292 Crítica · 9.8 CWE-347 12/03/2025

Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 contain a patch for the issue.

CVE-2023-0669 Alta · 7.2 KEV Urgente · 86 Exploit público Ransomware CWE-502 06/02/2023

Fortra GoAnywhere MFT Remote Code Execution Vulnerability

Fortra (formerly, HelpSystems) GoAnywhere MFT suffers from a pre-authentication command injection vulnerability in the License Response Servlet due to deserializing an arbitrary attacker-controlled object. This issue was patched in version 7.1.2.

CVE-2022-37454 Crítica · 9.8 CWE-190 21/10/2022

Buffer overflow in sponge queue functions

The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. This occurs in the sponge function interface.

CVE-2018-25032 Alta · 7.5 CWE-787 25/03/2022

Nokogiri affected by zlib's Out-of-bounds Write vulnerability

zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.

CVE-2021-3517 Alta · 8.6 CWE-787 19/05/2021

Nokogiri contains libxml Out-of-bounds Write vulnerability

There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.

CVE-2021-3518 Alta · 8.8 CWE-416 18/05/2021

Nokogiri Implements libxml2 version vulnerable to use-after-free

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

CVE-2021-3537 Média · 5.9 CWE-476 14/05/2021

Nokogiri Implements libxml2 version vulnerable to null pointer dereferencing

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

CVE-2020-36327 Alta · 8.8 29/04/2021

Dependency Confusion in Bundler

Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every "Dependency Confusion" issue in every product.

CVE-2021-23337 Alta · 7.2 Exploit público CWE-94 15/02/2021

Command Injection

Lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function.

CVE-2020-11023 Média · 6.1 KEV Alta · 61 Exploit público CWE-79 29/04/2020

JQuery Cross-Site Scripting (XSS) Vulnerability

In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing <option> elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0.

CVE-2020-7595 Alta · 7.5 CWE-835 21/01/2020

libxml as used in Nokogiri has an infinite loop in a certain end-of-file situation

xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.

CVE-2019-5418 Alta · 7.5 KEV Urgente · 79 Exploit público CWE-22 27/03/2019

Rails Ruby on Rails Path Traversal Vulnerability

There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.

CVE-2018-14404 Média · 6.5 CWE-476 19/07/2018

Nokogiri NULL Pointer Dereference

A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.

CVE-2017-18258 Média · 6.5 CWE-770 08/04/2018

Uncontrolled resource consumption in nokogiri

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

CVE-2017-16932 Alta · 7.5 CWE-835 23/11/2017

Nokogiri gem, via libxml, is affected by DoS vulnerabilities

parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.

CVE-2017-9050 Alta · 7.5 CWE-125 18/05/2017

Out-of-bounds read in nokogiri

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.

CVE-2016-4658 Crítica · 9.8 CWE-119 25/09/2016

Nokogiri does not forbid namespace nodes in XPointer ranges

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.