CVE-2026-52853
Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
CVE-2026-52853 is a medium vulnerability (CVSS 5.2) in Docmost, published September 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. No source names a fixed version.
- Severity
- 5.2 MediumCVSS 3.1, CVE List
- Exploit chance
- 0.21%EPSS, 10th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
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.
- Record
CVE-2026-52853- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-269
- Updated
- 2026-11-02
EUVDEUVD-2026-86391
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.
- Record
EUVD-2026-86391- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-52853- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-269
- Updated
- 2026-11-02
OSV
Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
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.
- Record
CVE-2026-52853- CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-269
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/docmost/docmost/security/advisories/GHSA-84fx-mvqx-p5gx
nvd.nist.gov/vuln/detail/CVE-2026-52853