What’s Vulnerable › Vulnerabilities

CVE-2023-52084: Winter CMS Stored XSS through Backend ColorPicker FormWidget

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-28 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• wintercms winter: before 1.2.4 — fixed in 1.2.4

How to fix

Upgrade to a fixed version: wintercms winter 1.2.4. Check the vendor advisory for mitigations.

References

• https://github.com/wintercms/winter/commit/517f65dfae679b57575b047de13c5af48915a5ba
• https://github.com/wintercms/winter/security/advisories/GHSA-43w4-4j3c-jx29
• https://github.com/wintercms/winter/commit/517f65dfae679b57575b047de13c5af48915a5ba
• https://github.com/wintercms/winter/security/advisories/GHSA-43w4-4j3c-jx29

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