What is the CVSS score of CVE-2026-27126?

CVE-2026-27126 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Craft Cms are affected by CVE-2026-27126?

Organizations using versions 4.5.0-RC1 should be aware of moderate risk from CVE-2026-27126, a cross-site scripting vulnerability rated CVSS 4.8.. A patch is available.

How to fix or mitigate CVE-2026-27126?

Within 30 days: Identify affected systems running versions 4.5.0-RC1 and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Craft Cms CVE-2026-27126

MEDIUM

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

2026-02-24 security-advisories@github.com

GHSA-3jh3-prx3-w6wc

XSS Craft Cms

4.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.8 MEDIUM

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

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:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

Patch released

Feb 27, 2026 - 20:06 nvd

Patch available

CVE Published

Feb 24, 2026 - 03:16 nvd

MEDIUM 4.8

DescriptionGitHub Advisory

Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the editableTable.twig component when using the html column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and allowAdminChanges must be enabled in production, which is against Craft's security recommendations. Versions 4.16.19 and 5.8.23 patch the issue.

AnalysisAI

Stored XSS in Craft CMS 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22 allows high-privileged administrators to inject malicious scripts into HTML-type table columns that execute in other users' browsers. Exploitation requires admin-level access and the allowAdminChanges setting enabled in production, limiting the risk to environments with already-compromised administrative accounts. Patches are available in versions 4.16.19 and 5.8.23.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Craft Cms. Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, a stored Cross-site Scripting (XSS) vulnerability exists in the editableTable.twig component when using the html column type. The application fails to sanitize the input, allowing an attacker to execute arbitrary JavaScript when another user views a page with the malicious table field. In order to exploit the vulnerability, an attacker must have an administrator account, and `allow

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.