What is CVE-2021-39867?

CVE-2021-39867 is a medium-severity vulnerability in Gitlab, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-10-05.

How severe is CVE-2021-39867?

Medium severity. CVSS v3 base score is 6.5 out of 10.

SSRF in Gitlab

CVE-2021-39867

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.009 (54.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Gitlab — versions 4.3.0, >=14.3, <14.3.1, >=8.15, <14.1.7

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39867?: CVE-2021-39867 is a medium-severity vulnerability in Gitlab, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2021-10-05.
How severe is CVE-2021-39867?: Medium severity. CVSS v3 base score is 6.5 out of 10.