Winter is a free, open-source content management system based on the Laravel PHP framework. The Snowboard framework in versions 1.1.8, 1.1.9, and 1.2.0 is vulnerable to prototype pollution in the main Snowboard class as well as its plugin loader. The 1.0 branch of Winter is not affected, as it does not contain the Snowboard framework. This issue has been patched in v1.1.10 and v1.2.1. As a workaround, one may avoid this issue by following some common security practices for JavaScript, including implementing a content security policy and auditing scripts.
CVE-2022-39357
HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 1.1%, top 22% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.1
- EG Score
- 8.1(medium)
- EPSS
- 59.5%
- KEV
- Not listed
Published
October 26, 2022
Last Modified
November 21, 2024
References (10)
- security-advisories@githubhttps://github.com/wintercms/winter/commit/2a13faf99972e84c9661258f16c4750fa99d29a1
- security-advisories@githubhttps://github.com/wintercms/winter/commit/bce4b59584abf961e9400af3d7a4fd7638e26c7f
- security-advisories@githubhttps://github.com/wintercms/winter/releases/tag/v1.1.10
- security-advisories@githubhttps://github.com/wintercms/winter/releases/tag/v1.2.1
- security-advisories@githubhttps://github.com/wintercms/winter/security/advisories/GHSA-3fh5-q6fg-w28q
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wintercms/winter/commit/2a13faf99972e84c9661258f16c4750fa99d29a1
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wintercms/winter/commit/bce4b59584abf961e9400af3d7a4fd7638e26c7f
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wintercms/winter/releases/tag/v1.1.10
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wintercms/winter/releases/tag/v1.2.1
- af854a3a-2127-422b-91ae-364da2661108https://github.com/wintercms/winter/security/advisories/GHSA-3fh5-q6fg-w28q
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| wintercms/winter | v1.2.0 | 1.2.1 | — |
Frequently asked(5)
What is CVE-2022-39357?
CVE-2022-39357 is a high vulnerability published on October 26, 2022. Winter is a free, open-source content management system based on the Laravel PHP framework. The Snowboard framework in versions 1.1.8, 1.1.9, and 1.2.0 is vulnerable to prototype pollution in the main Snowboard class as well as its plugin loader. The 1.0 branch of Winter is not affected, as it does…
When was CVE-2022-39357 disclosed?
CVE-2022-39357 was first published in the National Vulnerability Database on October 26, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-39357 actively exploited?
CVE-2022-39357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-39357?
CVE-2022-39357 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2022-39357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-39357, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-39357
Is Your Infrastructure Affected by CVE-2022-39357?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.