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CVE-2026-25496

Craft has a stored XSS in Number Prefix & Suffix Fields

4.8 MediumFix available

Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, 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. This issue is patched in versions 4.16.18 and 5.8.22.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
Passive

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.41%Up 0.4 points since Feb 10, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.8

Craft has a stored XSS in Number Prefix & Suffix Fields

Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, 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. This issue is patched in versions 4.16.18 and 5.8.22.

Record
CVE-2026-25496
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2026-6845 4.8

Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, 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. This issue is patched in versions 4.16.18 and 5.8.22.

Record
EUVD-2026-6845
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-9f5h-mmq6-2x78 4.8

Craft CMS Vulnerable to Stored XSS in Number Prefix & Suffix Fields

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" />
<img src=x onerror="alert('Number Prefix/Suffix XSS')" hidden>
  1. Save the field
  2. Add this field to any element (e.g., User Profile fields via Settings → Users → User Fields)
  3. Navigate to your account (/admin/myaccount) or any user profile (/admin/users/{id})
  4. 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.

Record
GHSA-9f5h-mmq6-2x78
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-79
Updated
2026-11-02
NVD 4.8

Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, 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. This issue is patched in versions 4.16.18 and 5.8.22.

Record
CVE-2026-25496
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/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
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 4.8

Craft has a stored XSS in Number Prefix & Suffix Fields

Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, 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. This issue is patched in versions 4.16.18 and 5.8.22.

Record
CVE-2026-25496
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-9f5h-mmq6-2x78 4.8

Craft CMS Vulnerable to Stored XSS in Number Prefix & Suffix Fields

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" />
<img src=x onerror="alert('Number Prefix/Suffix XSS')" hidden>
  1. Save the field
  2. Add this field to any element (e.g., User Profile fields via Settings → Users → User Fields)
  3. Navigate to your account (/admin/myaccount) or any user profile (/admin/users/{id})
  4. 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.

Record
GHSA-9f5h-mmq6-2x78
CVSS 4.0
4.8 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-79
Updated
2026-11-02
OSVCLSA-2026-1783904621 No score

TuxCare security update for craftcms/cms (1 CVE)

TuxCare rebuilt craftcms/cms to address 1 CVE. Fixed in 3.9.15-p5+tuxcare.

Record
CLSA-2026-1783904621
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
craftcms/cms
Packagist
 5.0.0-RC1 to 5.8.21
5.8.22
craftcms/cms
Packagist
 4.0.0-RC1 to 4.16.17
4.16.18
craftcms/cms
TuxCare:Packagist
 3.9.15 up to 3.9.15-p5+tuxcare, plus listed versions
3.9.15-p1+tuxcare3.9.15-p2+tuxcare3.9.15-p3+tuxcare3.9.15-p4+tuxcare
3.9.15-p5+tuxcare
craftcms/cms
Packagist
 5.0.0-RC1 up to 5.8.22, plus listed versions
5.0.05.0.15.0.25.0.35.0.4
Show 45 moreShow less
5.0.55.0.65.1.05.1.15.1.105.1.25.1.35.1.45.1.55.1.65.1.75.1.85.1.95.2.05.2.0-beta.15.2.0-beta.25.2.0-beta.35.2.0-beta.45.2.0-beta.55.2.0-beta.65.2.15.2.105.2.25.2.35.2.45.2.4.15.2.55.2.65.2.75.2.85.2.95.3.05.3.0-beta.15.3.0-beta.25.3.0.15.3.0.25.3.0.35.3.15.3.25.3.35.3.45.3.55.3.65.4.05.4.0.1
5.8.22
craftcms/cms
Packagist
 4.0.0-RC1 up to 4.16.18, plus listed versions
4.0.04.0.0-RC24.0.0-RC34.0.0.14.0.1
Show 45 moreShow less
4.0.24.0.34.0.44.0.54.0.5.14.0.5.24.0.64.1.04.1.0.14.1.0.24.1.14.1.24.1.34.1.44.1.4.14.10.04.10.0-beta.14.10.0-beta.24.10.14.10.24.10.34.10.44.10.54.10.64.10.74.10.84.11.04.11.0.14.11.0.24.11.14.11.24.11.34.11.44.11.54.12.04.12.14.12.24.12.34.12.44.12.4.14.12.54.12.64.12.6.14.12.74.12.8
4.16.18

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-25496 is a medium vulnerability (CVSS 4.8) in Craftcms Cms, published February 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in craftcms/cms 5.8.22.

References

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Left out here: 268 versions. The JSON record has them.

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