EUVD-2026-39874Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
|
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Alert meAnalysisAIv1 – Jun 26, 2026
Remote code execution in OpenProject before 17.3.3 and 17.4.1 arises from cache store poisoning, allowing an attacker with adjacent-network access and no authentication (CVSS:3.1 AV:A/PR:N) to corrupt cached entries and ultimately execute arbitrary code on the server. The CVSS 9.6 score reflects a scope change (S:C) with full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Severity by source
AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
1DescriptionCVE.org
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.
Executive ViewAI
OpenProject installations running versions before 17.3.3 and 17.4.1 face critical remote code execution risk from unauthenticated attackers on the same network segment, with complete system compromise possible. No vendor-released patch is available at time of analysis; no public exploit has been identified. Affected organizations must implement immediate defensive measures until patches are released.
Within 24 hours: Audit all deployed OpenProject instances for version numbers and confirm network exposure status. Within 7 days: Implement network segmentation to restrict OpenProject access to authorized users and systems; enable detailed monitoring and alerting for suspicious access patterns on affected systems. Within 30 days: Monitor vendor security advisories for patches (expected versions 17.3.3 or 17.4.1); establish rapid deployment procedures to apply patches immediately upon release.
Network segmentation restricting OpenProject systems to authorized personnel and network segments; implement enhanced monitoring and anomaly detection on affected systems; maintain current backups to enable rapid recovery from potential compromise; restrict adjacent-network connectivity where operationally feasible.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
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