CVE-2025-30204 (GCVE-0-2025-30204)
Vulnerability from cvelistv5
Published
2025-03-21 21:42
Modified
2025-04-10 13:03
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Summary
golang-jwt is a Go implementation of JSON Web Tokens. Starting in version 3.2.0 and prior to versions 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.
References
Impacted products
Vendor Product Version
golang-jwt jwt Version: >= 3.2.0, < 4.5.2
Version: >= 5.0.0-rc.1, < 5.2.2
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