GitHub Advisoryadvisory · Packagist

GHSA-3wxg-w96j-8hq9 CraftCMS stored XSS in Quick Post widget error message

LOW Published 2023-05-26 Modified 2023-05-26 Official page ↗
Aliases
CVE-2023-33194
Ecosystem
Packagist
Packages
craftcms/cms
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
Weaknesses
CWE-79, CWE-80
Reviewed
2023-05-26

Affected packages

• Packagist craftcms/cms: >= 4.0.0-RC1, < 4.4.6 → fixed in 4.4.6 • Packagist craftcms/cms: >= 3.0.0, < 3.8.6 → fixed in 3.8.6

Description

Summary The platform does not filter input and encode output in Quick Post validation error message, which can deliver an XSS payload. Details Old CVE fixed the XSS in label HTML but didn’t fix it when clicking save. PoC 1. Login at admin 2. Go to setting 3. Create a Section 4. On Entry page, click Edit label 5. Inject the XSS payload into the label and save 6. On the admin dashboard choose new widget -> Quick Post 7. In Quick Post, click save with blank slug; The XSS will be executed "errors":{"title":["alert('nono') cannot be blank."],"slug":["Slug cannot be blank."] Fixed in https://github.com/craftcms/cms/commit/9d0cd0bda7c8a830a3373f8c0f06943e519ac888

Related

Alias · CVE (1)

  • CVE-2023-33194 Craft is a CMS for creating custom digital experiences on the web.The platform does not filter input and encode output in Quick Post… vulnerability

Weakness · CWE (2)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness
  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page weakness

References