CVE-2026-111350

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.

References

• https://github.com/papermark/papermark
• 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/7fa52b23944823a9e74402fca8e48d644239bc0b
• https://github.com/papermark/papermark/commit/b81cf62f390cda112f35538eb09e54b5f728b74a