High severity · published Aug 26, 2026
CVE-2026-63041
Apache APISIX: attach-consumer-label does not strip client-supplied consumer-label headers
8.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache APISIX · Apache Software Foundation
3.11.0 through 3.17.0 · source: vendor
AP
Apisix · Apache
3.11.0 before 3.18.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63041
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63041
Mailing List
https://lists.apache.org/thread/yg9tgn699rz7kyglw82m1775do8frjr4
Mailing List
http://www.openwall.com/lists/oss-security/2026/08/26/11
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