CVE-2021-39911 Information disclosure in GitLab
GitLab exposes private email addresses of issue and merge request assignees to webhook consumers due to improper access control.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-39911?
CVE-2021-39911 is a low-severity vulnerability in Gitlab Gitlab, published on 4 Nov 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An improper access control flaw in all versions of GitLab CE/EE starting from 13.9 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 exposes private email address of Issue and Merge Requests assignee to Webhook data consumers
Which versions are affected by CVE-2021-39911?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 13.9.0 | 14.2.6, 14.3.4, 14.4.1 |
Products include Gitlab Gitlab.
How do I fix CVE-2021-39911?
Upgrade gitlab to a fixed version for your release line: 14.2.6, 14.3.4 or 14.4.1.
Is CVE-2021-39911 being exploited?
There is no known exploitation of CVE-2021-39911 in the wild and no public exploit code.
Other vulnerabilities in Gitlab Gitlab
- CVE-2026-97229 GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound
- CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal
- CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control
- CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution
- CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF)
Sources
Also known as BIT-gitlab-2021-39911, GHSA-xfxc-c47w-9432, UBUNTU-CVE-2021-39911.