Vulnerability · Published Aug 25, 2021 · Assigned by GitLab
CVE-2021-22242
High 8.7
In plain English
A high-severity security flaw in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 63.6% (higher than 99.2% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)63.6%top 0.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Insufficient input sanitization in Mermaid markdown in GitLab CE/EE version 11.4 and up allows an attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted markdown
Affected products (as reported)
References
- https://gitlab.com/gitlab-org/gitlab/-/issues/332528 x_refsource_MISC
- https://hackerone.com/reports/1212822 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22242.json x_refsource_CONFIRM