Apache Software Foundation vulnerabilities

CVE-2026-65583 Critical · 9.1 CWE-345 Aug 6, 2026

Apache CXF: Self-issued ID token claims validation skipped

Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks (issuer/subject/audience/time and sub_jwk binding), enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in the validator. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fixes this issue.

CVE-2026-63687 Critical · 9.1 CWE-345 Aug 6, 2026

Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT (e.g., one whose client_secret is known or compromised) can thereby substitute the code_challenge, code_challenge_method, nonce, and state values that were set in the outer HTTP request, undermining PKCE integrity and OpenID Connect replay protection. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-61466 Critical · 9.1 CWE-304 Aug 6, 2026

Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation

In Apache CXF's OAuth2 Dynamic Client Registration endpoint, the authorization server accepts and stores the `scope` value supplied in the client registration request verbatim, without validating it against an AS-defined allowlist. This could lead to a client self-assigning privileged scopes at registration time. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-57818 High · 8.1 CWE-367 Aug 6, 2026

Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-66909 Critical · 9.8 CWE-502 Aug 6, 2026

Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage

Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-65432 High · 7.5 CWE-611 Aug 6, 2026

Apache CXF: XXE via WSDL/XSD import parsing

Apache CXF reads a top-level WSDL through its hardened StaxUtils path, which disables XML DTDs and external entities. However, any <wsdl:import> or <xsd:import> referenced from that top-level WSDL is handed off to WSDL4J, which does not disable DOCTYPE declarations or external entities. As a result, the protections applied to the top-level document do not extend to imported documents, leaving imported WSDL/XSD content vulnerable to XML External Entity (XXE) attacks. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-64958 High · 7.5 CWE-400 Aug 6, 2026

Apache CXF: Denial of service via message header attachments

An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-57819 High · 7.5 CWE-400 Aug 6, 2026

Apache CXF: No default restriction on the amount of form parameters per message

Apache CXF allows to set a limit on the number of form parameters in a JAX-RS message via the "maxFormParameterCount" configuration option. However, no default limit is set which may lead to denial of service attacks when processing requests with very large numbers of form parameters. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue by using a default limit of 500 parameters.

CVE-2026-57817 High · 8.1 CWE-20 Aug 6, 2026

Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the `c_hash` parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider (IdP) that omits the `c_hash`, the RP becomes vulnerable to Authorization Code Substitution/Injection attacks. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

CVE-2026-54225 High · 7.5 CWE-770 Aug 6, 2026

Apache CXF: Denial of Service attack via large attachments

Apache CXF allows to control the maximum attachment size via the "attachment-max-size". Prior to Apache CXF 4.2.3 and 4.1.8 and 3.6.12, there was no default placed on this size, meaning that a denial of service attack is possible if the user doesn't explicitly set the limit. Users should update to Apache CXF 4.2.3 or 4.1.8 or 3.6.12 which fixes this problem by imposing a default attachment size limit of 50mb.

CVE-2026-64640 Medium · 6.5 CWE-863 Aug 6, 2026

Apache Polaris: register endpoint reads attacker-controlled storage location before allowed-locations validation

Apache Polaris did not consistently validate storage locations supplied during table and view registration. An authenticated principal with permission to register a table or view could, depending on the affected release and registration path, cause Polaris to use the catalog's storage credentials to read a caller-selected Iceberg metadata file before verifying that the file was within the catalog's allowed storage locations. If the catalog's underlying credentials could read an object outside that boundary, this could disclose limited information from the object. Polaris could also accept registration metadata located within an allowed location that contained references to storage locations outside the allowed boundary. This second condition did not itself cause Polaris to read the referenced external locations during registration. The demonstrated impact is limited to confidentiality. No unauthorized data modification or availability impact has been demonstrated. The server-side read requires a deployment using S3 credential vending and an object outside the allowed locations that the catalog's underlying storage credentials can read. Exploitation requires an authenticated principal with table- or view-registration privileges.

CVE-2026-60053 Critical · 9.1 CWE-613 Aug 5, 2026

Apache Answer: Residual Administrative API Key Access After Role or Account Revocation

Insufficient Session Expiration vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Administrative API keys remained usable after the owning administrator was demoted or the account was marked inactive, suspended, or deleted, allowing continued access until the keys were explicitly removed. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-60023 High · 7.5 CWE-200 Aug 5, 2026

Apache Answer: Unauthorized disclosure of deleted or pending answer content

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Deleted or pending answers could be retrieved by unauthorized users through the single-answer read path when the parent question remained visible, exposing answer content that should not have been accessible. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-50749 Medium · 6.5 CWE-863 Aug 5, 2026

Apache Answer: Missing authorization in revision audit reject allows authenticated users to reject pending revisions

Improper Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Any authenticated user can reject arbitrary pending edit-revisions without review permission due to a missing authorization check on the reject operation. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-48912 Medium · 6.5 CWE-639 Aug 5, 2026

Apache Answer: Improper authorization in avatar update cleanup allows authenticated users to delete arbitrary uploaded files by URL

Improper Input Validation vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-48911 High · 7.5 CWE-306 Aug 5, 2026

Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow

Insufficient Verification of Data Authenticity vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-48834 High · 7.5 CWE-400 Aug 5, 2026

Apache Answer: Denial of service via crafted Accept-Language header parsing

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

CVE-2026-61486 Critical · 9.8 CWE-121 Aug 5, 2026

Apache Lucy: stack-buffer-overflow in JSON parser error reporter on malformed input

** UNSUPPORTED WHEN ASSIGNED ** Stack-based Buffer Overflow vulnerability in Apache Lucy. This issue affects Apache Lucy: all versions. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users. Lucy is now maintained outside of the ASF at https://github.com/lucysearch . This issue has been fixed in 0.8.0 there. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

CVE-2026-61484 Critical · 9.8 CWE-502 Aug 5, 2026

Apache Lucy: LucyX::Remote::SearchServer unauthenticated remote Storable::thaw -> RCE/DoS

** UNSUPPORTED WHEN ASSIGNED ** Deserialization of Untrusted Data vulnerability in Apache Lucy. This issue affects Apache Lucy: all versions. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users. Lucy is now maintained outside of the ASF at https://github.com/lucysearch . 0.8.0 is no longer affected by this issue, because the offending feature has been removed there. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

CVE-2026-61483 High · 7.5 CWE-674 Aug 5, 2026

Apache Lucy: QueryParser unbounded recursion on deeply-nested query -> C-stack-overflow DoS

** UNSUPPORTED WHEN ASSIGNED ** Uncontrolled Recursion vulnerability in Apache Lucy. This issue affects Apache Lucy: all versions. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users. NOTE: This vulnerability only affects products that are no longer supported by the ASF. Lucy is now maintained outside of the ASF at https://github.com/lucysearch

CVE-2026-68080 Medium · 6.5 CWE-406 Aug 5, 2026

Apache Qpid Broker-J: Unbounded echo flow responses can lead to denial of service

It was not possible to govern the rate at which the broker would respond to an echo flow, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgrade to version 10.1.0, which fixes the issue.

CVE-2026-68078 Medium · 6.5 CWE-770 Aug 5, 2026

Apache Qpid Broker-J: Unable to govern the maximum number of transfer frames per incoming delivery

It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgrade to version 10.1.0, which fixes the issue.

CVE-2026-68077 Medium · 6.5 CWE-606 Aug 5, 2026

Apache Qpid Broker-J: Unbounded disposition range handling can lead to denial of service

An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgrade to version 10.1.0, which fixes the issue.

CVE-2026-68075 Medium · 6.5 CWE-770 Aug 5, 2026

Apache Qpid Broker-J: Incoming session flow control window can be exceeded

An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgrade to version 10.1.0, which fixes the issue.

CVE-2026-68073 High · 7.5 CWE-674 Aug 5, 2026

Apache Qpid Broker-J: Unbounded type nesting can lead to pre-authentication stack overflow

A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service. This issue affects Apache Qpid Broker-J: through 10.0.1. Users are recommended to upgrade to version 10.1.0, which fixes the issue.