← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2021-39935 exploited? Yes: in CISA KEV since 3 Feb 2026

Gociux · GitLab Community and Enterprise Editions · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-39935, GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Feb 2026, 1513 days after it was published. It affects GitLab Community and Enterprise Editions. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 3 Feb 2026
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity6.8CVSS 3.1 · medium
US federal due24 Feb 2026BOD 22-01 deadline

What it is

GitLab Community and Enterprise Editions contain a server-side request forgery vulnerability which could allow unauthorized external users to perform Server Side Requests via the CI Lint API.

VendorGitLab (6 exploited CVEs in KEV)
ProductCommunity and Enterprise Editions
VulnerabilityGitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability
WeaknessCWE-918
Published13 Dec 2021
Added to KEV3 Feb 2026
Reported by (CNA)GitLab

What to do

  1. Check whether you run it. Look for Community and Enterprise Editions in your asset inventory, including appliances and cloud images. Stack check lists every exploited GitLab CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 13 Dec 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for GitLab.

Other exploited CVEs in Community and Enterprise Editions

References

Questions

Is CVE-2021-39935 being exploited?

Yes. CISA added CVE-2021-39935 to the Known Exploited Vulnerabilities catalog on 3 Feb 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-39935 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-39935?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check GitLab's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Community and Enterprise Editions and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in February 2026 · GitLab scorecard · act-now radar.

Running GitLab in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →