Vulnerability details
CVE-2026-31908
Apache Software Foundation Apache APISIX
Apache APISIX: forward auth plugin allows header injection
CVSS 3.1
9.1Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.1Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache APISIX | 2.12.0 ≤ v ≤ 3.15.0 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-04-14
- Last updated
- 2026-04-16
- State
- Published
- Assigner (CNA)
- apache
Exploit prediction (EPSS)
0.52%
Probability of exploitation in 30 days
44.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-75Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)