Apache APISIX: attach-consumer-label does not strip client-supplied consumer-label headers (CVE-2026-63041)
Description
Apache APISIX versions 3.11.0 through 3.17.0 contain a vulnerability in the attach-consumer-label plugin where client-supplied consumer-label headers are not properly sanitized. This flaw allows attackers to escalate privileges or bypass authorization controls. The issue is resolved in version 3.18.0, which users are advised to upgrade to.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The attach-consumer-label plugin in Apache APISIX improperly trusts and fails to sanitize client-supplied consumer-label headers. This reliance on untrusted inputs in a security decision (CWE-807) enables attackers to escalate privileges or bypass authorization mechanisms. The vulnerability affects Apache APISIX versions from 3.11.0 up to but not including 3.18.0. The vendor has fixed the issue in version 3.18.0.
Potential Impact
Attackers can exploit this vulnerability to escalate their privileges or bypass authorization checks within Apache APISIX, potentially gaining unauthorized access or performing actions beyond their intended permissions. This could lead to unauthorized resource access or manipulation within systems using affected versions of Apache APISIX.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.18.0 or later, where the vulnerability has been fixed. No other mitigations are specified or required beyond applying this official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h244-w3g4-3cv4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-63041"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a91a876acd9273b49069d28
Added to database: 08/28/2026, 15:25:42 UTC
Last enriched: 09/09/2026, 23:08:36 UTC
Last updated: 10/13/2026, 06:48:18 UTC
Views: 77
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