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GHSA-2RG8-47CF-HP2J

Vulnerability from github – Published: 2026-10-09 12:31 – Updated: 2026-10-09 12:31

Details

In Apache CXF, STSTokenValidator checks whether a SAML assertion is signed by a trusted certificate before deciding to send it to the STS. That result was stored in one object shared by all requests, so one request could read another's result. A remote, unauthenticated attacker could send a forged assertion signed with an untrusted certificate while legitimate requests were being processed, and it could be accepted as trusted without ever reaching the STS. Only services that use STSTokenValidator to validate SAML tokens without alwaysValidateToSts set are affected. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.

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  "affected": [],
  "aliases": [
    "CVE-2026-97791"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-09T11:17:03Z",
    "severity": null
  },
  "details": "In Apache CXF, STSTokenValidator checks whether a SAML assertion is signed by a trusted certificate before deciding to send it to the STS. That result was stored in one object shared by all requests, so one request could read another\u0027s result. A remote, unauthenticated attacker could send a forged assertion signed with an untrusted certificate while legitimate requests were being processed, and it could be accepted as trusted without ever reaching the STS. Only services that use STSTokenValidator to validate SAML tokens without alwaysValidateToSts set are affected.\u00a0\nUsers are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.",
  "id": "GHSA-2rg8-47cf-hp2j",
  "modified": "2026-10-09T12:31:44Z",
  "published": "2026-10-09T12:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97791"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/ssdr417qgms9fjl0m8802xd8170wnk1l"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/09/10"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97791 (GCVE-0-2026-97791)

Vulnerability from cvelistv5 – Published: 2026-10-09 10:19 – Updated: 2026-10-09 11:08

Title

Apache CXF: STSTokenValidator can accept untrusted SAML assertions because it shares validation state between requests

Summary

Severity

No CVSS data available.

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 940 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread.html/ssdr417qgms9…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache CXF	Affected: 4.2.0 , < 4.2.4 (semver) Affected: 4.0.0 , < 4.1.9 (semver) Affected: 0 , < 3.6.13 (semver)

Credits

MopMonk-AI

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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.
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GHSA-2RG8-47CF-HP2J

CVE-2026-97791 (GCVE-0-2026-97791)

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