VulnerabilityAnalyzed
CVE-2023-51774
The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack.
HIGH 8.4EPSS 0.23%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.
- CVSS 3.1
- 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- json-jwt project/json-jwt
- Source
- cve@mitre.org
References
- https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.mdExploit, Third Party Advisory
- https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.