High severity · published Jun 26, 2026
CVE-2026-52784
OpenProject: CSRF on TARGET through /users/:id via POST parameter "user[admin]"
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is a CSRF on TARGET through /users/:id via POST parameter "user[admin]". This vulnerability is fixed in 17.3.3 and 17.4.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openproject · opf
< 17.3.3; >= 17.4.0, < 17.4.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52784
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-52784
github.com
https://github.com/opf/openproject/security/advisories/GHSA-6crw-7f5r-4qj9
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