CVE-2019-15586 Cross-site scripting in Gitlab CE/EE
Cross-site scripting in the Mermaid plugin allows attackers to execute arbitrary scripts in victim browsers, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-15586?
CVE-2019-15586 is a medium-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 28 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A XSS exists in Gitlab CE/EE < 12.1.10 in the Mermaid plugin.
Weakness: CWE-79
Which versions are affected by CVE-2019-15586?
It affects 1 product.
Products include Gitlab Gitlab.
How do I fix CVE-2019-15586?
No fix has been published for CVE-2019-15586 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-15586 being exploited?
There is no known exploitation of CVE-2019-15586 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 GHSA-vm62-p48h-5h9h.