TI-2023-28527 Aliases CVE-2023-52084 GHSA-43w4-4j3c-jx29

Winter CMS Stored XSS through Backend ColorPicker FormWidget

LOW 24CWE-79Published 2023-12-28 · Updated 2025-04-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Winter is a free, open-source content management system. Prior to 1.2.4, Users with access to backend forms that include a ColorPicker FormWidget can provide a value that would then be rendered unescaped in the backend form, potentially allowing for a stored XSS attack. This issue has been patched in v1.2.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00309 23rd percentileScored 2026-11-07

Fix Fixed winter (wintercms): 1.2.4winter/wn-backend-module (Packagist): 1.2.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
wintercms	winter	before 1.2.4	1.2.4	Patch available	CNA
—	winter/wn-backend-module (Packagist)	before 1.2.4	1.2.4	Patch available	GHSA-43w4-4j3c-jx29

winter Vendorwintercms Affected before 1.2.4 Fixed in 1.2.4 Patch available CNA
winter/wn-backend-module (Packagist) Vendor— Affected before 1.2.4 Fixed in 1.2.4 Patch available GHSA-43w4-4j3c-jx29

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wintercms:winter::::::::	before 1.2.4	Vulnerable	wintercms

cpe:2.3:a:wintercms:winter:*:*:*:*:*:*:*:* Versions before 1.2.4 Vulnerable ·wintercms

Remediation

Fix · CNA winter (wintercms) Fixed in 1.2.4
Fix · GHSA-43w4-4j3c-jx29 winter/wn-backend-module (Packagist) Fixed in 1.2.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-52084
2026-10-03 Alias added: GHSA-43w4-4j3c-jx29

References

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2023-52084

Other 1

https://github.com/wintercms/winter

TI-2024-19497 Server-side Template Injection (SSTI) vulnerability in Winter CMS v.1.2.3 allows a remote… CVSS 3.1HIGH 7.2
TI-2023-28528 Winter CMS Local File Inclusion through Server Side Template Injection CVSS 3.1MEDIUM 5.4
TI-2022-18732 Winter vulnerable to Prototype Pollution in Snowboard framework CVSS 3.1CRITICAL 9.8
TI-2026-21979 Winter: Privilege escalation by authenticated backend users CVSS 3.1CRITICAL 10.0
TI-2024-36264 Winter CMS Modules allows a sandbox bypass in Twig templates leading to data modification and deletion CVSS 3.1HIGH 8.5
TI-2023-18899 Winter CMS vulnerable to stored XSS through privileged upload of SVG file CVSS 3.1MEDIUM 4.8

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences