Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would need access to the Backend with a user account with the following permission: cms.manage_assets. The Winter CMS maintainers strongly recommend that the cms.manage_assets permission only be reserved to trusted administrators and developers in general. This vulnerability is fixed in 1.2.10.
CVE-2026-22254
- No confirmed exploitation signals yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EG Risk
- 0EG Risk 0/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses intrinsic severity with real-world exploitation and automatability, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. It is distinct from the 0–10 EG Score, which measures severity.
- EPSS
- 16.6%
- KEV
- Not listed
Published
February 6, 2026
Last Modified
February 20, 2026
References (3)
- security-advisories@githubhttps://github.com/wintercms/winter/commit/8a7f74b004fcd19721764fc63af0cdb339d9fb65
- security-advisories@githubhttps://github.com/wintercms/winter/releases/tag/v1.2.10
- security-advisories@githubhttps://github.com/wintercms/winter/security/advisories/GHSA-m7gw-rffq-rxjm
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| winter/wn-cms-module | v1.0.473 ... v1.2.9 (23 versions) | 1.2.10 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 14× in last 7d / 49× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-22254?
When was CVE-2026-22254 disclosed?
Is CVE-2026-22254 actively exploited?
How do I remediate CVE-2026-22254?
Dependency Blast Radius
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