Apache APISIX vulnerabilities

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.

Apache APISIX versions 2.11.0 through 3.17.0 are vulnerable to LDAP Injection. A caller with valid credentials for one LDAP entry can authenticate as a different consumer, bypassing the plugin's configured scope.

Apache APISIX version 3.17.0 is vulnerable to inefficient algorithmic complexity in graphql-limit-count routes. A single small request can pin a gateway worker at 100% CPU for an extended period.

Apache APISIX versions 2.12.0 through 3.17.0 are vulnerable to HTTP Request/Response Smuggling. An attacker could make other clients receive attacker-chosen or other users' responses on serverless-plugin routes.

Apache APISIX has a vulnerability relying on untrusted inputs in a security decision. An attacker can escalate privileges or bypass authorization by sending certain values not properly sanitized by the attach-consumer-label plugin.

CVE-2026-49872 describes an improper authentication vulnerability in Apache APISIX that allows an attacker to authenticate with credentials from a different source when the cas-auth plugin is used in a route. This issue affects versions from 3.0.0 to 3.16.0.

CVE-2026-47339 in Apache APISIX has an incorrect authorization vulnerability that allows an attacker to authenticate using credentials from a different source. This issue affects versions from 2.14.1 through 3.16.0.

The 'Open Redirect' vulnerability in Apache APISIX allows redirecting users to untrusted sites, potentially leading to phishing and credential theft. This affects versions from 3.0.0 to 3.16.0.

Improper Input Validation vulnerability in Apache APISIX allows an attacker to spoof identity headers by exploiting certain configuration in the forward-auth plugin. This issue affects versions from 2.12.0 through 3.16.0.

Apache APISIX exposes sensitive data via basic-auth logging, writing plaintext usernames and passwords to error logs at INFO/DEBUG level. Fixed in version 3.14.