Vulnerability-Lookup

CVE-2026-31908 (GCVE-0-2026-31908)

Vulnerability from cvelistv5 – Published: 2026-04-14 08:06 – Updated: 2026-04-16 12:06

Title

Apache APISIX: forward auth plugin allows header injection

Summary

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.

Severity ?

No CVSS data available.

CWE

CWE-75 - Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)

Assigner

apache

References

URL

Tags

https://lists.apache.org/thread/sob643s5lztov7x57…

vendor-advisory

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache APISIX	Affected: 2.12.0 , ≤ 3.15.0 (semver)

Credits

SeungMyung Lee

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-31908

Vulnerability from fkie_nvd - Published: 2026-04-14 09:16 - Updated: 2026-04-17 18:40

Severity ?

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

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b	Mailing List, Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/04/14/3	Mailing List, Third Party Advisory

Impacted products

	Vendor	Product	Version
	apache	apisix	*

JSON

To clipboard

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          "cpeMatch": [
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            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    }
  ],
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  "descriptions": [
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      "lang": "en",
      "value": "Header injection vulnerability in Apache APISIX.\n\nThe attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.\nThis issue affects Apache APISIX: from 2.12.0 through 3.15.0.\n\nUsers are recommended to upgrade to version 3.16.0, which fixes the issue."
    }
  ],
  "id": "CVE-2026-31908",
  "lastModified": "2026-04-17T18:40:12.787",
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}

bit-apisix-2026-31908

Vulnerability from bitnami_vulndb

Published

2026-04-16 23:36

Modified

2026-04-17 09:12

Summary

Apache APISIX: forward auth plugin allows header injection

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "apisix",
        "purl": "pkg:bitnami/apisix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.12.0"
            },
            {
              "fixed": "3.16.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-31908"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*"
    ],
    "severity": "Critical"
  },
  "details": "Header injection vulnerability in Apache APISIX.\n\nThe attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers.\nThis issue affects Apache APISIX: from 2.12.0 through 3.15.0.\n\nUsers are recommended to upgrade to version 3.16.0, which fixes the issue.",
  "id": "BIT-apisix-2026-31908",
  "modified": "2026-04-17T09:12:55.244Z",
  "published": "2026-04-16T23:36:03.898Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/14/3"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31908"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Apache APISIX: forward auth plugin allows header injection"
}

GHSA-JV22-34XC-W9X6

Vulnerability from github – Published: 2026-04-14 09:30 – Updated: 2026-04-16 15:31

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.

Severity ?

9.1 (Critical)


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

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
    "CVE-2026-31908"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-75"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-14T09:16:35Z",
    "severity": "CRITICAL"
  },
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  "id": "GHSA-jv22-34xc-w9x6",
  "modified": "2026-04-16T15:31:29Z",
  "published": "2026-04-14T09:30:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31908"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/sob643s5lztov7x579j8o0c444t36n6b"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/14/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-31908 (GCVE-0-2026-31908)

FKIE_CVE-2026-31908

bit-apisix-2026-31908

Vulnerability from bitnami_vulndb

GHSA-JV22-34XC-W9X6

Tags

Sightings

Nomenclature