CVE-2025-30204

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-30204
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-30204.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-30204
Aliases
Downstream
AZL (35)
CGA (2601)
CLEANSTART (31)
CLSA (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (55)
openSUSE (24)
RHEA (1)
RHSA (18)
RLSA (4)
ROOT (1)
SUSE (8)
UBUNTU (1)
Related
ALSA (6)
openSUSE (23)
SUSE (8)
Published
2025-03-21T21:42:01Z
Modified
2026-08-12T03:30:39Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
jwt-go allows excessive memory allocation during header parsing
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-405"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30204.json"
}
References

Affected packages

Git / github.com/golang-jwt/jwt

Affected ranges

Type
GIT
Repo
https://github.com/golang-jwt/jwt
Events
Introduced
06ea1031745cb8b3dab3f6a236daf2b0aa468b7e
Introduced
148d71010923ca691c950db9846191800f498f8d
Fixed
2f0e9add62078527821828c76865661aa7718a84
Fixed
0951d184286dece21f73c85673fd308786ffe9c3
Fixed
bf316c48137a1212f8d0af9288cc9ce8e59f1afb
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "3.2.0"
        },
        {
            "fixed":  "4.5.2"
        },
        {
            "introduced":  "5.0.0-rc.1"
        },
        {
            "fixed":  "5.2.2"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.2.0
v3.2.1
v3.2.2
v4.*
v4.0.0
v4.1.0
v4.2.0
v4.3.0
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.5.0
v4.5.1
v5.*
v5.0.0
v5.0.0-rc.1
v5.0.0-rc.2
v5.1.0
v5.2.0
v5.2.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-30204.json"