Vulnerability-Lookup

FKIE_CVE-2026-50627

Vulnerability from fkie_nvd - Published: 2026-06-12 10:16 - Updated: 2026-06-12 13:08

Severity

Summary

The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/06/11/4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The JwtAccessTokenValidator class in Apache CXF fails to validate the \u0027aud\u0027 (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks.\u00a0Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue."
    }
  ],
  "id": "CVE-2026-50627",
  "lastModified": "2026-06-12T13:08:47.310",
  "metrics": {},
  "published": "2026-06-12T10:16:22.587",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/11/4"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-289"
        }
      ],
      "source": "security@apache.org",
      "type": "Primary"
    }
  ]
}

CVE-2026-50627 (GCVE-0-2026-50627)

Vulnerability from cvelistv5 – Published: 2026-06-12 08:55 – Updated: 2026-06-12 09:28

Title

Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

Summary

Severity

No CVSS data available.

CWE

CWE-289 - Authentication Bypass by Alternate Name

Assigner

apache

References

2 references

URL	Tags
https://lists.apache.org/thread/0jfzz9q992957b99t…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/11/4

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache CXF	Affected: 4.2.0 , < 4.2.2 (semver) Affected: 0 , < 4.1.7 (semver)

Credits

Guanping Zhang reported this vulnerability.

Show details on NVD website

JSON

To clipboard

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    ],
    "cna": {
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          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.cxf:cxf-rt-rs-security-oauth2",
          "product": "Apache CXF",
          "vendor": "Apache Software Foundation",
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              "status": "affected",
              "version": "4.2.0",
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              "status": "affected",
              "version": "0",
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator",
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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.

Action not permitted

FKIE_CVE-2026-50627

CVE-2026-50627 (GCVE-0-2026-50627)

Tags

Sightings

Nomenclature