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CVE-2026-31908 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-31908

CVE-2026-31908

CRITICAL9.1

Apache APISIX: forward auth plugin allows header injection

Published Apr 14, 2026

Modified 1 weeks ago

Details

Header injection vulnerability in Apache APISIX.

The attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers. This issue affects Apache APISIX: from 2.12.0 through 3.15.0.

Users are recommended to upgrade to version 3.16.0, which fixes the issue.

References

http://www.openwall.com/lists/oss-security/2026/04/14/3

https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b

https://www.cve.org/CVERecord?id=CVE-2026-31908

CVSS Analysis

CVSS v3.1

9.1

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

NoneA:N

9.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedApr 14, 2026

ModifiedApr 16, 2026