CVE-2026-52780 — CRITICAL (9.6)

Vulnerability 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.

CVSS Score

9.6

CRITICAL

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-20

References

https://github.com/opf/openproject/security/advisories/GHSA-qj96-f42f-6336

FAQ

What is CVE-2026-52780?

CVE-2026-52780 is a vulnerability with a CVSS score of 9.6 (CRITICAL). 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....

How severe is CVE-2026-52780?

CVE-2026-52780 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-52780?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.