What’s Vulnerable › Vulnerabilities

CVE-2026-49872: Apache APISIX: Improper authentication in cas-auth plugin

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-19 · updated 2026-10-26
• Weakness: CWE-287

Description

Improper Authentication vulnerability in Apache APISIX. When the cas-auth plugin is used in a route, an attacker can possibly authenticate itself with credentials from a different source. This issue affects Apache APISIX: from 3.0.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache APISIX: from 3.0.0 before 3.17.0 — fixed in 3.17.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache APISIX 3.17.0. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/bzjpo60ygxo7kxdqf7vw3l5zw2lh6m5k
• http://www.openwall.com/lists/oss-security/2026/06/19/15

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