XSS in GitLab
CVE-2019-6784
An issue was discovered in GitLab Community and Enterprise Edition before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1. It allows XSS (issue 1 of 2). Markdown fields contain a lack of input validation and output encoding when processing KaTeX that results in a persistent XSS.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.011 (64.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab-ce/issues/54416 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2019-6784?
- CVE-2019-6784 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-09-09.
- How severe is CVE-2019-6784?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-6784 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.