CVE-2026-31924

Apache APISIX versions 3.12.0 through 3.18.0 contain an improper authentication vulnerability in the openid-connect plugin. A token that is active for one issuer may be accepted on a route restricted to another issuer when remote introspection is used.

Apache APISIX versions 2.14.1 through 3.18.0 contain a vulnerability in the use of non-canonical URL paths for authorization decisions. In some configurations where a permissive route overlaps a protected one, a crafted encoded path can reach an upstream endpoint that the matched route's policies were never meant to cover, allowing unauthenticated access.

The batch-requests plugin in Apache APISIX allows allocation of resources without limits or throttling. An unauthenticated caller can drive a gateway worker into OOM via a route where the batch-requests plugin is used and the batch endpoint is publicly exposed. The issue affects Apache APISIX from 1.3.0 through 3.18.0.

Cross-Site Request Forgery (CSRF) vulnerability in feishu-auth and dingtalk-auth plugins in Apache APISIX. An attacker who can get a user to click a crafted link may cause that user's browser session on a protected route to be established under the attacker's identity instead of their own. Any work the user then performs in that session, including uploads, form submissions, and account bindings, lands in the attacker's account. Affects Apache APISIX from 3.17.0 through 3.18.0.

Apache APISIX versions 3.17.0 through 3.18.0 contain an improper verification of cryptographic signature vulnerability in the saml-auth plugin. An unauthenticated attacker can impersonate any user on routes protected by this plugin under default configuration.

Vulnerability in Apache APISIX exposing data to the wrong session. Under certain authz-keycloak configurations, a request's authorization scope may persist into later requests on the same route, leading to unintended authorization expansion and inconsistent access-control decisions. Affects versions from 2.3.0 before 3.7.0.

A vulnerability in Apache APISIX 3.17.0 causes unmasked header values to be written to the log sink under a certain response structure. The issue is fixed in version 3.18.0.

The vulnerability related to improper validation of integrity check value in Apache APISIX allows authentication bypass in the jwe-decrypt plugin under default configuration. This issue affects versions from 3.8.0 to 3.16.0.

Authentication Bypass by Spoofing vulnerability in Apache APISIX allows an attacker to completely bypass the authentication process by capitalizing on certain configurations of the jwt-auth plugin. This issue affects Apache APISIX from v2.2 through v3.16.0.