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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:HAttack ComplexityHigh
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:CScopeChanged
Impact
C:LConfidentialityLow
I:HIntegrityHigh
A:NAvailabilityNone
Weaknesses
Affected Products
OpenID
oss-projectaka openid connect, openid4java
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
https://eprint.iacr.org/2025/629
eprint.iacr.org
https://github.com/OWASP/ASVS/issues/2678
github.com
https://openid.net/notice-of-a-security-vulnerability/
openid.net
and 2 more references View all →
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