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CVE-2025-30204 is a resource-exhaustion vulnerability in golang-jwt, a Go implementation of JSON Web Tokens. Beginning with version 3.2.0, the parse.ParseUnverified function uses strings.Split to split untrusted token input on periods. A malicious Authorization header containing the Bearer prefix followed by many period characters triggers memory allocations proportional to input length, with an amplification factor of approximately 16. Exploitation can degrade application performance or crash the application, causing denial of service. The vulnerability is fixed in versions 4.5.2 and 5.2.2.
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No public exploit code observed for this vulnerability.
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61 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A network-reachable vulnerability affecting AlmaLinux 9.2 systems covered by a TuxCare/Alma Linux local security check. It has an availability impact, with CVSS v3.0 score vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
A vulnerability addressed by the SUSE-SU-2026:1118-1 update for affected Docker Stable packages; no technical flaw description is provided.
A vulnerability in golang-jwt/jwt allows excessive memory allocation during header parsing. Red Hat lists it among the security fixes in the Important-rated Cryostat 4 update RHSA-2025:3503.
A vulnerability in golang-jwt/jwt (jwt-go) that permits excessive memory allocation while parsing JWT headers, creating a denial-of-service risk.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.