CVE-2026-52780 | OpenProject is open-source, web-based project management sof… | CVSS 9.6 CRITICAL

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.

Metadata

CVE ID: CVE-2026-52780
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-08 17:13 UTC
Published: 2026-06-26 19:09 UTC
Last updated: 2026-06-27 02:55 UTC
Primary CWE: CWE-20
CWE-20: Improper Input Validation
Vendor / Product: opf / openproject
Sources: cve.org · NVD

Severity & Metrics

9.6 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
opf	openproject	—	< 17.3.3, >= 17.4.0, < 17.4.1

Weakness (CWE)

CWE	Source	Description
CWE-20	cna	CWE-20: Improper Input Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.6	CRITICAL	3.1	cna	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References (1)

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