What’s Vulnerable › Vulnerabilities

CVE-2026-63041: Apache APISIX: attach-consumer-label does not strip client-supplied consumer-label headers

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-26 · updated 2026-08-27
• Weakness: CWE-807

Description

Reliance on Untrusted Inputs in a Security Decision vulnerability in Apache APISIX. This vulnerability allows an attacker to escalate privilege or perform an authorization bypass by sending certain values that the attach-consumer-label plugin does not sanitise correctly. This issue affects Apache APISIX: from 3.11.0 through 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache APISIX: from 3.11.0 before 3.18.0 — fixed in 3.18.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache APISIX 3.18.0. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/yg9tgn699rz7kyglw82m1775do8frjr4
• http://www.openwall.com/lists/oss-security/2026/08/26/11

Get alerted when CVE-2026-63041 or the next vulnerability affects your stack