CVE-2026-27126
Craft CMS has Stored XSS in Table Field via "HTML" Column Type
Description
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.
INFO
Published Date :
Feb. 24, 2026, 3:16 a.m.
Last Modified :
Feb. 27, 2026, 8:06 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Craft CMS to version 4.16.19 or 5.8.23.
- Ensure admin changes are disabled in production environments.
- Sanitize all user-provided input before displaying it.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27126.
| URL | Resource |
|---|---|
| https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b | Patch |
| https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27126 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27126
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27126 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27126 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:* *cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:* *cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* versions from (excluding) 5.0.0 up to (excluding) 5.8.23 *cpe:2.3:a:craftcms:craft_cms:4.5.0:-:*:*:*:*:*:* *cpe:2.3:a:craftcms:craft_cms:4.5.0:rc1:*:*:*:*:*:* *cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* versions from (excluding) 4.5.0 up to (excluding) 4.16.19 Added Reference Type GitHub, Inc.: https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b Types: Patch Added Reference Type GitHub, Inc.: https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc Types: Third Party Advisory -
New CVE Received by [email protected]
Feb. 24, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-79 Added Reference https://github.com/craftcms/cms/commit/f5d488d9bb6eff7670ed2c2fe30e15692e92c52b Added Reference https://github.com/craftcms/cms/security/advisories/GHSA-3jh3-prx3-w6wc