CVE-2025-30204 – golang-jwt Denial of Service (DoS)

The following table lists the changes that have been made to the
CVE-2025-30204 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Mar. 21, 2025

    Action Type Old Value New Value
    Added Description golang-jwt is a Go implementation of JSON Web Tokens. Prior to
    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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-405
    Added Reference https://github.com/golang-jwt/jwt/commit/0951d184286dece21f73c85673fd308786ffe9c3
    Added Reference https://github.com/golang-jwt/jwt/security/advisories/GHSA-mh63-6h87-95cp
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