CVE-2021-39867

8.1 highEPSS 0.9%

High (8.1) in gitlab gitlab. EPSS 0.9% chance of exploitation in the next 30 days.

In all versions of GitLab CE/EE since version 8.15, a DNS rebinding vulnerability in Gitea Importer may be exploited by an attacker to trigger Server Side Request Forgery (SSRF) attacks.

Severity

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
CWE: CWE-918
Published: 2021-10-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

gitlab:gitlab

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39867.json
https://gitlab.com/gitlab-org/gitlab/-/issues/214401
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39867.json
https://gitlab.com/gitlab-org/gitlab/-/issues/214401

Check your stack JSON