What is the CVSS score of CVE-2026-30235?

CVE-2026-30235 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Openproject are affected by CVE-2026-30235?

Organizations using OpenProject should be aware of notable risk from CVE-2026-30235, a cross-site scripting vulnerability rated CVSS 6.5.

How to fix or mitigate CVE-2026-30235?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Openproject CVE-2026-30235

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-11 security-advisories@github.com

XSS Openproject

6.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.5 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 11, 2026 - 17:16 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

OpenProject is an open-source, web-based project management software. Prior to 17.2.0, this vulnerability occurs due to improper validation of OpenProject’s Markdown rendering, specifically in the hyperlink handling. This allows an attacker to inject malicious hyperlink payloads that perform DOM clobbering. DOM clobbering can crash or blank the entire page by overwriting native DOM functions with HTML elements, causing critical JavaScript calls to throw runtime errors during application initialization and halt further execution. This vulnerability is fixed in 17.2.0.

AnalysisAI

web-based project management software. versions up to 17.2.0 is affected by cross-site scripting (xss) (CVSS 6.5).

Technical ContextAI

This vulnerability (CWE-79: Cross-site Scripting (XSS)) affects web-based project management software.. OpenProject is an open-source, web-based project management software. Prior to 17.2.0, this vulnerability occurs due to improper validation of OpenProject’s Markdown rendering, specifically in the hyperlink handling. This allows an attacker to inject malicious hyperlink payloads that perform DOM clobbering. DOM clobbering can crash or blank the entire page by overwriting native DOM functions with HTML elements, causing critical JavaScript calls to throw runtime errors during application initiali

RemediationAI

Fixed in version 17.2.0.. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.