CVE-2026-110623highCWE-862

CVE-2026-110623: high-severity vulnerability in papermerge-core

Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes API

Published

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.7epss 0.5%
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
Papermerge Core through 3.5.3 contains a missing authorization vulnerability in the shared nodes API that allows authenticated users to share other users' documents by supplying arbitrary node UUIDs. Attackers can call POST /shared-nodes or PATCH /shared-nodes/access/{node_id} to grant themselves any role, then read, modify, or delete victims' documents and revoke existing shares.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
papermerge · papermerge-core
Related CVEs — papermerge-core

In the same product, most dangerous first.

CVE-2026-110622HIGHPapermerge Core through 3.5.3 Missing Authorization in Page Management and OCR EndpointsEPSS 0.5%CVE-2026-110624LOWPapermerge Core through 3.5.3 Missing Authorization via /tags/all and /document-types/allEPSS 0.3%
References
https://github.com/papermerge/papermerge-core/blob/3.5.3/papermerge/core/features/shared_nodes/router.py#L78-L150https://github.com/papermerge/papermerge-core/commit/0fd469102b05b5ebeb5ee39b3f73ff76991ab269https://github.com/papermerge/papermerge-core/issues/1290https://github.com/papermerge/papermerge-core/issues/1291https://www.vulncheck.com/advisories/papermerge-core-through-3.5.3-missing-authorization-in-shared-nodes-api