Winter CMS Server-Side Template Injection (SSTI) vulnerability
Server-side Template Injection (SSTI) vulnerability in Winter CMS v.1.2.3 allows a remote attacker to execute arbitrary code via a crafted payload to the CMS Pages field and Plugin components.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | wintercms/winter | <= 1.2.3 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-75, CWE-97- Platform
- Composer
- Package
wintercms/winter- Disclosed
- 29.03.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8r5j-gm3j-cx9c - CC BY 4.0
Vulnerability history: wintercms/winter
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 07.2022 03.2024
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 1
- Low 1
Disclosures per year
- 2022: 2
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 0
-
Winter CMS Server-Side Template Injection (SSTI) vulnerability this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.