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CVE-2026-31908
ANC
CriticalConfirmedExploit available

Header injection vulnerability in Apache APISIX. The attacker can take advantage of certain configuration in forward-auth plugin to inject …

CVSS
9.1
Critical
EPSS
0.01
p39
Published
2026-01-01
Updated
2026-01-01
Description

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.

Tags · CWE
Pre-auth
CWE-75
CAPEC-81
CAPEC-93
Affected products
Apisix 2.12.0–3.16.0
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: N
None (N)
Exploit indicators
EPSS
0.005 · p39
Known exploited (KEV)
No
Known exploits — Сканер-ВС
CVE-2026-31908
github-poc · https://github.com/MehranTurk/CVE-2026-31908
Enterprise
Affected products
ProductVendorStatus
Tracked
apisix*Tracked