CVE-2021-39906
MEDIUMCVSS 6.1/10EPSS 60.73%
Last modified
CVE-2021-39906 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 60.73% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 13.5.0, < 14.2.6 |
| Gitlab | Gitlab | >= 14.3.0, < 14.3.4 |
| Gitlab | Gitlab | >= 14.4.0, < 14.4.1 |
References
- https://hackerone.com/reports/1347600Permissions Required, Third Party Advisory
- https://hackerone.com/reports/1347600Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-39906?
CVE-2021-39906 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 60.73% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39906?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-39906?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST