Description
OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.
Published: 2025-03-03
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-5571 OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.
History

Fri, 25 Apr 2025 15:00:00 +0000

Type Values Removed Values Added
References

Fri, 07 Mar 2025 16:45:00 +0000

Type Values Removed Values Added
References

Tue, 04 Mar 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 03 Mar 2025 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-863

Mon, 03 Mar 2025 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-863

Mon, 03 Mar 2025 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-863 CWE-305

Mon, 03 Mar 2025 17:45:00 +0000

Type Values Removed Values Added
Description OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 6.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N'}


Subscriptions

Openid Openid Connect
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-04-25T14:43:40.581Z

Reserved: 2025-02-23T00:00:00.000Z

Link: CVE-2025-27370

cve-icon Vulnrichment

Updated: 2025-03-04T16:59:31.051Z

cve-icon NVD

Status : Deferred

Published: 2025-03-03T18:15:40.650

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-27370

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-06-20T13:55:54Z

Weaknesses