Is CVE-2026-49871 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-49871 being exploited in the wild.

How severe is CVE-2026-49871?

Informational severity, with a CVSS score of 2.1, published 19 June 2026.

Which products and versions are affected?

Apache APISIX 3.0.0 through 3.16.0.

Is there a fix for CVE-2026-49871?

A patch was published on 2026-06-19: Fixed in version 3.17.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-49871 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-49871?

Check whether you run Apache APISIX at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-49871: Apache APISIX CSRF in cas-auth plugin

CVE-2026-49871 · Severity: info · CVSS 2.1 · Published 2026-06-19

Apache APISIX is a cloud-native API gateway used to manage and secure web traffic. A security flaw in its CAS authentication plugin allows an attacker to trick a user's browser into logging into a different account without their knowledge. This could lead to a user's subsequent actions being incorrectly attributed to the attacker's identity, potentially causing data confusion or operational errors.

Technologies: Apache APISIX. Vendors: Apache.

Quick answers

Is CVE-2026-49871 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-49871 being exploited in the wild.
How severe is CVE-2026-49871?: Informational severity, with a CVSS score of 2.1, published 19 June 2026.
Which products and versions are affected?: Apache APISIX 3.0.0 through 3.16.0.
Is there a fix for CVE-2026-49871?: A patch was published on 2026-06-19: Fixed in version 3.17.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-49871 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-49871?: Check whether you run Apache APISIX at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Cross-Site Request Forgery (CSRF) vulnerability exists in the cas-auth plugin of Apache APISIX when using default configurations. By inducing a victim to visit a malicious webpage, a remote attacker can trigger a login request that authenticates the victim's session as an identity controlled by the attacker. This results in session injection where upstream actions performed by the victim are attributed to the attacker's credentials. The issue affects versions 3.0.0 through 3.16.0 and is resolved in version 3.17.0.

Affected products

Apache APISIX 3.0.0 through 3.16.0

Timeline

2026-06-19: disclosed
2026-06-19: advisory
2026-06-19: patched: Fixed in version 3.17.0

References

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