CVE-2020-13271

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-10 · updated 2026-06-17
Weakness: CWE-79

Description

A Stored Cross-Site Scripting vulnerability allowed the execution of arbitrary Javascript code in the blobs API in all previous GitLab CE/EE versions through 13.0.1

Affected products

GitLab: before 12.9.8; from 12.10.0 before 12.10.7; from 13.0.0 before 13.0.1 — fixed in 12.10.7, 12.9.8, 13.0.1

How to fix

Upgrade to a fixed version: GitLab 12.10.7, 12.9.8, 13.0.1. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13271.json
https://gitlab.com/gitlab-org/gitlab/-/issues/200094
https://hackerone.com/reports/672150
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13271.json
https://gitlab.com/gitlab-org/gitlab/-/issues/200094
https://hackerone.com/reports/672150

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