Vulnerability-Lookup

CVE-2026-76646 (GCVE-0-2026-76646)

Vulnerability from cvelistv5 – Published: 2026-09-16 19:17 – Updated: 2026-09-17 19:13

Title

Apache MyFaces: Denial of Service via Unbounded Request Parsing

Summary

A remote attacker could cause excessive resource consumption by supplying specially crafted request parameters, potentially resulting in a denial of service condition. Older unsupported versions may also be affected. Users are recommended to upgrade to versions 2.3.12, 2.3-next-M9, 3.0.4, 4.0.4, or 4.1.4, which fix this issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 19:13 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/q8zxrdhbmmx8ofgr9…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache MyFaces	Affected: 2.2.0-beta , ≤ 2.2.15 (maven) Affected: 2.3.0 (maven) Affected: 2.3-next-M1 , ≤ 2.3-next-M8 (maven) Affected: 2.3.1 , ≤ 2.3.11 (maven) Affected: 3.0.0 , ≤ 3.0.3 (maven) Affected: 4.0.0 , ≤ 4.0.3 (maven) Affected: 4.1.0 , ≤ 4.1.3 (maven)	guessed

Credits

n0mi1k

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-76646

Vulnerability from fkie_nvd - Published: 2026-09-16 20:17 - Updated: 2026-09-17 20:18

Severity

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

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/q8zxrdhbmmx8ofgr9s7ymnqo8l2x8oy9
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/09/16/12

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  },
  "published": "2026-09-16T20:17:28.847",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://lists.apache.org/thread/q8zxrdhbmmx8ofgr9s7ymnqo8l2x8oy9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/16/12"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-3H23-H733-Q43F

Vulnerability from github – Published: 2026-09-16 21:32 – Updated: 2026-09-17 21:31

Details

A remote attacker could cause excessive resource consumption by supplying specially crafted request parameters, potentially resulting in a denial of service condition.

Older unsupported versions may also be affected.

Users are recommended to upgrade to versions 2.3.12, 2.3-next-M9, 3.0.4, 4.0.4, or 4.1.4, which fix this issue.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-76646"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T20:17:28Z",
    "severity": "HIGH"
  },
  "details": "A remote attacker could cause excessive resource consumption by supplying specially crafted request parameters, potentially resulting in a denial of service condition.\n\n\nOlder unsupported versions may also be affected.\n\nUsers are recommended to upgrade to versions 2.3.12, 2.3-next-M9, 3.0.4, 4.0.4, or 4.1.4, which fix this issue.",
  "id": "GHSA-3h23-h733-q43f",
  "modified": "2026-09-17T21:31:35Z",
  "published": "2026-09-16T21:32:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76646"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/q8zxrdhbmmx8ofgr9s7ymnqo8l2x8oy9"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/16/12"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-76646 (GCVE-0-2026-76646)

FKIE_CVE-2026-76646

GHSA-3H23-H733-Q43F

Tags

Sightings

Nomenclature

Related by attack behaviour