Vulnerability · Published Jun 26, 2026 · Assigned by GitHub_M
CVE-2026-52780OpenProject: Cache store poisoning leads to Remote Code Execution (RCE)
Critical 9.6
In plain English
A critical-severity improper input validation in openproject from opf. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.4%top 66.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, cache store poisoning leads to Remote Code Execution (RCE). This vulnerability is fixed in 17.3.3 and 17.4.1.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| opf | openproject | < 17.3.3>= 17.4.0, < 17.4.1 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/opf/openproject/security/advisories/GHSA-qj96-f42f-6336 x_refsource_CONFIRM