Auth bypass in Papermark
CVE-2026-111350
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/papermark-dataroom-group-delete-missing-authz (third-party-advisory)
- github.com/papermark/papermark/blob/v0.22.0/pages/api/teams/[teamId]/datarooms/… (technical-description)
- github.com/papermark/papermark/blob/v0.22.0/pages/api/teams/[teamId]/datarooms/… (technical-description)
- github.com/papermark/papermark/commit/b81cf62f390cda112f35538eb09e54b5f728b74a (patch)
- github.com/papermark/papermark/commit/7fa52b23944823a9e74402fca8e48d644239bc0b (patch)
- github.com/papermark/papermark (product)
- www.vulncheck.com/advisories/papermark-through-0.22.0-missing-authorization-in-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111350?
- CVE-2026-111350 is a medium-severity vulnerability in Papermark, classified under Missing Authorization. CVSS score: 5.0/10. Published 2026-10-15.
- How severe is CVE-2026-111350?
- Medium severity. CVSS v3 base score is 5.0 out of 10.