Craft CMS vulnerable to stored XSS in breadcrumb list and title fields

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L · score source

EPSS

• CVE-2024-45406: 0.35% estimated exploitation activity in the next 30 days; percentile 29.22 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Multiple Stored XSS can be triggered by the breadcrumb list and title fields with user input. Details 1. In the /admin/categories page, category title isn't sanitized and triggered xss. 2. In the category edit page under the /admin/categories/, category title in breadcrumb list isn't sanitized and triggered xss. 3. In the /admin/entries page, entry title isn't sanitized and triggered xss. 4. In the entry edit page under the /admin/entries/, entry title in breadcrumb list isn't sanitized and triggered xss. 5. In the /admin/myaccount and pages under it, username or full name in breadcrumb list isn't sanitized and triggered xss. Impact Malicious users can tamper with the control panel. PoC 1. In the /admin/categories page, category title isn't sanitized and triggered xss. 2. In the category edit page under the /admin/categories/, category title in breadcrumb list isn't sanitized and triggered xss. 3. In the /admin/entries page, entry title isn't sanitized and triggered xss. 4.…

Published by the source

9 Sep 2024, 18:18 UTC

Last modified by the source

9 Sep 2024, 19:30 UTC

Source last checked

26 Oct 2026, 14:26 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-28h4-788g-rh42

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2024-45406

Advisory: Craft CMS vulnerable to stored XSS in breadcrumb list and title fields
IDs: CVE-2024-45406, GHSA-28h4-788g-rh42
Record: https://patchnext.com/advisories/cve-2024-45406 (revision 1, source checked 26 Oct 2026, 14:26 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: craftcms/cms 5.1.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist craftcms/cms: affected >= 5.0.0, < 5.1.2; fixed in 5.1.2

## Suggested inspection (read-only)
- Packagist craftcms/cms: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on craftcms/cms.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-28h4-788g-rh42 (GitHub-reviewed advisory GHSA-28h4-788g-rh42 lists affected ranges: Packagist craftcms/cms >=5.0.0 <5.1.2)

Commands are suggestions: review each one before running it.