GHSA-9f5h-mmq6-2x78

Suggest an improvement
Source
https://github.com/advisories/GHSA-9f5h-mmq6-2x78
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-9f5h-mmq6-2x78/GHSA-9f5h-mmq6-2x78.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-9f5h-mmq6-2x78
Aliases
Published
2026-02-09T20:35:47Z
Modified
2026-02-09T23:26:34.567628Z
Severity
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Craft CMS Vulnerable to Stored XSS in Number Prefix & Suffix Fields
Details

Summary

A stored XSS vulnerability exists in the Number field type settings. The Prefix and Suffix fields are rendered using the |md|raw Twig filter without proper escaping, allowing script execution when the Number field is displayed on users' profiles.

Proof of Concept

Required Permissions

Steps to Reproduce

  1. Log in with an admin account
  2. Navigate to Settings → Fields → New field
  3. Choose Number as the field type
  4. Set the Prefix/Suffix Text field to: <img width="611" height="908" alt="image" src="https://github.com/user-attachments/assets/63766ca4-4fa9-490b-8bea-37364137527d" /> 
    &lt;img src=x onerror="alert('Number Prefix/Suffix XSS')" hidden>
  5. Save the field
  6. Add this field to any element (e.g., User Profile fields via Settings → Users → User Fields)
  7. Navigate to your account (/admin/myaccount) or any user profile (/admin/users/{id})
  8. XSS executes when viewing the form <img width="1246" height="677" alt="image-1" src="https://github.com/user-attachments/assets/dafeb2b7-905f-4a4b-b3d6-1c16a905498f" />

Mitigation

Sanitize prefix/suffix before rendering or use |e filter instead of |raw.

Database specific 
{
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-79"
    ],
    "github_reviewed_at": "2026-02-09T20:35:47Z",
    "nvd_published_at": "2026-02-09T20:15:58Z",
    "severity": "MODERATE"
}
References

Affected packages

Packagist / craftcms/cms

Package

Name
craftcms/cms
Purl
pkg:composer/craftcms/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.0.0-RC1
Fixed
5.8.22

Affected versions

5.*
5.0.0-RC1
5.0.0
5.0.1
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.1.0
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9
5.1.10
5.2.0-beta.1
5.2.0-beta.2
5.2.0-beta.3
5.2.0-beta.4
5.2.0-beta.5
5.2.0-beta.6
5.2.0
5.2.1
5.2.2
5.2.3
5.2.4
5.2.4.1
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.3.0-beta.1
5.3.0-beta.2
5.3.0
5.3.0.1
5.3.0.2
5.3.0.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.4.0
5.4.0.1
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.5.1
5.4.6
5.4.7
5.4.7.1
5.4.8
5.4.9
5.4.10
5.4.10.1
5.5.0
5.5.0.1
5.5.1
5.5.1.1
5.5.2
5.5.3
5.5.4
5.5.5
5.5.6
5.5.6.1
5.5.7
5.5.8
5.5.9
5.5.10
5.6.0
5.6.0.1
5.6.0.2
5.6.1
5.6.2
5.6.3
5.6.4
5.6.5
5.6.5.1
5.6.6
5.6.7
5.6.8
5.6.9
5.6.9.1
5.6.10
5.6.10.1
5.6.10.2
5.6.11
5.6.12
5.6.13
5.6.14
5.6.15
5.6.16
5.6.17
5.7.0-beta.1
5.7.0-beta.2
5.7.0
5.7.1
5.7.1.1
5.7.2
5.7.3
5.7.4
5.7.5
5.7.6
5.7.7
5.7.8
5.7.8.1
5.7.8.2
5.7.9
5.7.10
5.7.11
5.8.0
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
5.8.7
5.8.8
5.8.9
5.8.10
5.8.11
5.8.12
5.8.13
5.8.13.1
5.8.13.2
5.8.14
5.8.15
5.8.16
5.8.17
5.8.18
5.8.19
5.8.20
5.8.21

Database specific

last_known_affected_version_range 
"<= 5.8.21"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-9f5h-mmq6-2x78/GHSA-9f5h-mmq6-2x78.json"

Packagist / craftcms/cms

Package

Name
craftcms/cms
Purl
pkg:composer/craftcms/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.0.0-RC1
Fixed
4.16.18

Affected versions

4.*
4.0.0-RC1
4.0.0-RC2
4.0.0-RC3
4.0.0
4.0.0.1
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.0.5.1
4.0.5.2
4.0.6
4.1.0
4.1.0.1
4.1.0.2
4.1.1
4.1.2
4.1.3
4.1.4
4.1.4.1
4.2.0
4.2.0.1
4.2.0.2
4.2.1
4.2.1.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.5.1
4.2.5.2
4.2.6
4.2.7
4.2.8
4.3.0
4.3.1
4.3.2
4.3.2.1
4.3.3
4.3.4
4.3.5
4.3.6
4.3.6.1
4.3.7
4.3.7.1
4.3.8
4.3.8.1
4.3.8.2
4.3.9
4.3.10
4.3.11
4.4.0-beta.1
4.4.0-beta.2
4.4.0-beta.3
4.4.0-beta.4
4.4.0-beta.5
4.4.0-beta.6
4.4.0-beta.7
4.4.0
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.6.1
4.4.7
4.4.7.1
4.4.8
4.4.9
4.4.10
4.4.10.1
4.4.11
4.4.12
4.4.13
4.4.14
4.4.15
4.4.16
4.4.16.1
4.4.17
4.5.0-beta.1
4.5.0-beta.2
4.5.0
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.6.1
4.5.7
4.5.8
4.5.9
4.5.10
4.5.11
4.5.11.1
4.5.12
4.5.13
4.5.14
4.5.15
4.6.0-RC1
4.6.0
4.6.1
4.7.0
4.7.1
4.7.2
4.7.2.1
4.7.3
4.7.4
4.8.0
4.8.1
4.8.2
4.8.3
4.8.4
4.8.5
4.8.6
4.8.7
4.8.8
4.8.9
4.8.10
4.8.11
4.9.0
4.9.1
4.9.2
4.9.3
4.9.4
4.9.5
4.9.6
4.9.7
4.10.0-beta.1
4.10.0-beta.2
4.10.0
4.10.1
4.10.2
4.10.3
4.10.4
4.10.5
4.10.6
4.10.7
4.10.8
4.11.0
4.11.0.1
4.11.0.2
4.11.1
4.11.2
4.11.3
4.11.4
4.11.5
4.12.0
4.12.1
4.12.2
4.12.3
4.12.4
4.12.4.1
4.12.5
4.12.6
4.12.6.1
4.12.7
4.12.8
4.12.9
4.13.0
4.13.1
4.13.1.1
4.13.2
4.13.3
4.13.4
4.13.5
4.13.6
4.13.7
4.13.8
4.13.9
4.13.10
4.14.0
4.14.0.1
4.14.0.2
4.14.1
4.14.2
4.14.3
4.14.4
4.14.5
4.14.6
4.14.7
4.14.8
4.14.8.1
4.14.9
4.14.10
4.14.11
4.14.11.1
4.14.12
4.14.13
4.14.14
4.14.15
4.15.0-beta.1
4.15.0-beta.2
4.15.0
4.15.0.1
4.15.0.2
4.15.1
4.15.2
4.15.3
4.15.4
4.15.5
4.15.6
4.15.6.1
4.15.6.2
4.15.7
4.16.0
4.16.1
4.16.2
4.16.3
4.16.4
4.16.5
4.16.6
4.16.6.1
4.16.7
4.16.8
4.16.9
4.16.9.1
4.16.10
4.16.11
4.16.12
4.16.13
4.16.14
4.16.15
4.16.16
4.16.17

Database specific

last_known_affected_version_range 
"<= 4.16.17"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-9f5h-mmq6-2x78/GHSA-9f5h-mmq6-2x78.json"