No exploitation reportedFix available

CVE-2025-30204

Q: Is CVE-2025-30204 actively exploited?

Active exploitation of CVE-2025-30204 has not been confirmed. Its EPSS score was 0.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2025-30204?

CVE-2025-30204 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2025-03-21
WeaknessCWE-405

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2025-03-2122:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-30204?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-30204?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV

golang-jwt/jwt

Branch	Affected	Fixed in	Source
—	all versions	no fix published	OSV
3.2	≥ 3.2.0, ≤ 3.2.2	no fix published	OSV

golang-jwt/jwt

Branch	Affected	Fixed in	Source
4.5	< 4.5.2	4.5.2	OSV

golang-jwt/jwt

Branch	Affected	Fixed in	Source
5.x	≥ 5.0.0-rc.1, < 5.2.2	5.2.2	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

grafanaAlmaLinux:10all versions · fixed in 10.2.6-15.el10_0and 1 other package
grafanaAlmaLinux:9all versions · fixed in 10.2.6-11.el9_6and 1 other package
grafanaAlmaLinux:9all versions · fixed in 10.2.6-9.el9_5and 1 other package
osbuild-composerAlmaLinux:9all versions · fixed in 118.2-1.el9_5.alma.1and 2 other packages
osbuild-composerAlmaLinux:9all versions · fixed in 132.2-1.el9_6.alma.1and 2 other packages
osbuild-composerAlmaLinux:8all versions · fixed in 101-3.el8_10.alma.1and 2 other packages

Vendor advisories

CVE-2025-30204 Red Hat Product Security3,866 products fixed · 70 known affected
golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing
rhai-tech-preview/assisted-installer-agent-rhel8 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · rhai-tech-preview/assisted-installer-reporter-rhel8 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · rhai-tech-preview/assisted-installer-rhel8 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · +67 more
RHSA-2026:67858 Red Hat Product Security2 products fixed
Red Hat Security Advisory: OpenShift Container Platform 4.15.69 bug fix and security update
RHSA-2026:67936 Red Hat Product Security2 products fixed
Red Hat Security Advisory: OpenShift Container Platform 4.16.71 bug fix and security update
RHSA-2026:59579 Red Hat Product Security4 products fixed
Red Hat Security Advisory: multicluster engine for Kubernetes v2.6.14 security update
RHSA-2026:59558 Red Hat Product Security8 products fixed
Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.10 security update
RHSA-2026:3718 Red Hat Product Security4 products fixed
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.15.4

103 more advisories

Full record on NVD

Fix

Vendor fix Red Hat Product Security RHSA-2026:67858 · 2 productsFor OpenShift Container Platform 4.15 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
Vendor fix Red Hat Product Security RHSA-2026:67936 · 2 productsFor OpenShift Container Platform 4.16 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.…
Vendor fix Red Hat Product Security RHSA-2026:59579 · 4 productsFor multicluster engine for Kubernetes, see the following documentation for details on how to install the images: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.11/html/clusters/cluster_mce_overview#mce-install-intro
Vendor fix Red Hat Product Security RHSA-2026:59558 · 8 productsFor multicluster engine for Kubernetes, see the following documentation for details on how to install the images: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.13/html/clusters/cluster_mce_overview#mce-install-intro
Vendor fix Red Hat Product Security RHSA-2026:3718 · 4 productsRed Hat OpenShift Pipelines is a cloud-native, continuous integration and continuous delivery (CI/CD) solution based on Kubernetes resources. It uses Tekton building blocks to automate deployments across multiple platforms by abstracting away the underlying implementation details. Tekton introduces…
Vendor fix Red Hat Product Security RHSA-2026:2172 · 64 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://docs.redhat.com/en/documentation/red_hat_openshift_data_foundation/4.15/html/updating_openshift_data_foundation/updating-ocs-…

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2025-03-24
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-405read 2026-10-23
FIRST EPSSEPSS score0.8 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2025-03-21
Last Modified: 2026-06-17
NVD status: Deferred

Frequently asked questions

What is CVE-2025-30204?

Is CVE-2025-30204 actively exploited?

Active exploitation of CVE-2025-30204 has not been confirmed. Its EPSS score was 0.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-30204?

CVE-2025-30204 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running golang-jwt/jwt? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database