- 5.2MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace ADMIN can use the workspace invitation flow to invite an external email address with the OWNER role because the role ceiling does not prevent ADMIN users from granting privileges above their own. When the invitation is accepted, the new account receives OWNER-level permissions, allowing the ADMIN to create a backdoor OWNER account or promote a colluding external user to the workspace's highest privilege level. This issue is fixed in version 0.90.1.
Timeline
ID reserved
By GitHub_M
- 4 months later
· 4 months later
Published
- 11 days later
· 11 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.2.
Affected products
References
References4
- https://github.com/docmost/docmost/security/advisories/GHSA-84fx-mvqx-p5gx (opens in a new tab)x_refsource_CONFIRM
- https://github.com/docmost/docmost/pull/2250 (opens in a new tab)x_refsource_MISC
- https://github.com/docmost/docmost/commit/33895b060790358869f54ae451c3848480b39503 (opens in a new tab)x_refsource_MISC
- https://github.com/docmost/docmost/releases/tag/v0.90.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86391 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-52853)Record last updated .