🛡️ CVE-2022-31053
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-347 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Biscuit is an authentication and authorization token for microservices architectures. The Biscuit specification version 1 contains a vulnerable algorithm that allows malicious actors to forge valid Γ-signatures. Such an attack would allow an attacker to create a token with any access level. The version 2 of the specification mandates a different algorithm than gamma signatures and as such is not affected by this vulnerability. The Biscuit implementations in Rust, Haskell, Go, Java and Javascript all have published versions following the v2 specification. There are no known workarounds for this issue.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-347
Public Exploit ✅ No
Source NVD
Published 2022-06-17
Updated 2026-06-15
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
biscuit-auth — —
biscuit-go — 2.0.0
biscuit-haskell 0.1.0.0 0.2.0.0
biscuit-java — 2.0.0
com.clever-cloud:biscuit-java — 2.0.0
github.com/biscuit-auth/biscuit-go — —

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