UpHeron
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Servers and applications

CVE-2021-39906

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.

Severity
Medium 6.1
Published
5 Nov 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
14.2.6, 14.3.4, 14.4.1
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 13.5.0 before 14.2.6
  • From 14.3.0 before 14.3.4
  • From 14.4.0 before 14.4.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-39906
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-39906