Back to Database
Status published
Medium
CVE-2025-27371
In certain IETF OAuth 2.0-related specifications, when the JSON Web...
Vulnerability Description
In certain IETF OAuth 2.0-related specifications, when the JSON Web Token Profile for OAuth 2.0 Client Authentication mechanism is used, there are ambiguities in the audience values of JWTs sent to authorization servers. The affected RFCs may include RFC 7523, and also RFC 7521, RFC 7522, RFC 9101 (JAR), and RFC 9126 (PAR).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-27371
Credits & Attribution
No credits recorded in the NVD database.
References
- https://openid.net/wp-content/uploads/2025/01/OIDF-Responsible-Disclosure-Notice-on-Security-Vulnerability-for-private_key_jwt.pdf
- https://openid.net/notice-of-a-security-vulnerability/
- https://talks.secworkshop.events/osw2025/talk/R8D9BS/
- https://github.com/OWASP/ASVS/issues/2678
- https://eprint.iacr.org/2025/629
More from IETF
View All →CVE-2025-23019
IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and...
Medium
5.4
CVE-2025-23018
IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the...
Medium
5.4
CVE-2024-7596
Generic UDP Encapsulation (GUE) (IETF Draft) do not validate or verify the source of a network packet
Unknown
0
CVE-2024-7595
GRE and GRE6 Protocols (RFC2784) do not validate or verify the source of a network packet
Unknown
0
CVE-2024-3661
DHCP routing options can manipulate interface-based VPN traffic
High
7.6
Affected Vendor
IETF
View all reports →Affected Software
RFC 7523
Vulnerable Versions:
7523
Timeline
Official Publish:
March 3rd, 2025
Last Modified:
April 25th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.