Vulnerability · Published Nov 4, 2021 · Assigned by GitLab
CVE-2021-39906
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 60.7% (higher than 99.2% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)60.7%top 0.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf.
Affected products (as reported)
References
- https://gitlab.com/gitlab-org/gitlab/-/issues/341566 x_refsource_MISC
- https://hackerone.com/reports/1347600 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39906.json x_refsource_CONFIRM