Craft has a potential information disclosure vulnerability in preview tokens (CVE-2026-29113) | HOL Guard CVE

Low · CVSS 0.0CVE-2026-29113GHSA-VG3J-HPM9-8V5V

Craft has a potential information disclosure vulnerability in preview tokens

Answer in brief

CVE-2026-29113 records a Low severity (CVSS 0.0) vulnerability in Craft has a potential information disclosure vulnerability in preview tokens. The current sources do not mark it as known exploited. The current feed maps craftcms/cms (composer), craftcms/cms (composer), craftcms/cms (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 10, 2026Updated Sep 2, 2026Source checked Sep 2, 2026First seen by HOL Sep 2, 2026Material review Sep 2, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 0.0
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 0.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps craftcms/cms (composer), craftcms/cms (composer), craftcms/cms (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
craftcms/cmscomposer	>=4.0.0-RC1,<4.17.3	4.17.3
craftcms/cmscomposer	>=5.0.0-RC1,<5.9.7	5.9.7
craftcms/cmsgeneric	>= 4.0.0-RC1, < 4.17.3 \|\| >= 5.0.0-RC1, < 5.9.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for craftcms/cms, craftcms/cms, craftcms/cms.
Review the reported fix. Update craftcms/cms to 4.17.3; craftcms/cms to 5.9.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 2, 2026

Sources and claim methodology

Upstream source description

Craft is a content management system (CMS). Prior to 4.17.3 and 5.9.7, Craft CMS has a CSRF issue in the preview token endpoint at /actions/preview/create-token. The endpoint accepts an attacker-supplied previewToken. Because the action does not require POST and does not enforce a CSRF token, an attacker can force a logged-in victim editor to mint a preview token chosen by the attacker. That token can then be used by the attacker (without authentication) to access previewed/unpublished content tied to the victim’s authorized preview scope. This vulnerability is fixed in 4.17.3 and 5.9.7.

Quoted source text, attributed separately from HOL analysis.