CVE-2022-39357
CWE-1321Published: October 26, 2022· Updated: Jun 17, 2026
Official Description
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.
Risk Analysis
Winter CMS versions 1.1.8, 1.1.9, and 1.2.0 are vulnerable to prototype pollution in the Snowboard framework. This critical 9.8 CVSS flaw allows remote attackers to potentially gain control over the application.
No public exploit is known, and the vulnerability is not in the KEV database. It is remotely exploitable with low complexity.
Upgrade to Winter CMS v1.1.10 or v1.2.1. Implement a content security policy and audit scripts as a defensive measure.
Technical Analysis
CVE-2022-39357 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (10)
Quick Facts
Related CVEs (CWE-1321)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-39357 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts