CVE-2026-52780 | BDVDB-2026-343552 Detail

opfopenproject

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: adjacent.

Weaknesses#

CWE-20 Improper Input Validation

References#

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

Exploit#

No public exploit known

History#

Version 12026-06-26Record published in the CVE List.
Version 22026-06-27Most recent update recorded in the CVE List.

Published

Published: 2026-06-26
Last modified: 2026-06-27

Vendor information

Vendor: opf
Product: openproject

All opf vulnerabilities

Score

9.6 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 33.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Input Validation

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 17.3.3
Fixed
Not stated
Vulnerable
>= 17.4.0, < 17.4.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.6 Critical

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

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).