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TI-2024-19497 Aliases CVE-2024-29686GHSA-8r5j-gm3j-cx9c

Server-side Template Injection (SSTI) vulnerability in Winter CMS v.1.2.3 allows a remote…

Priority HIGH 67CWE-97Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.

Summary

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. NOTE: the vendor disputes this because the payload could only be entered by a trusted user, such as the owner of the server that hosts Winter CMS, or a developer working for them.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01821 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—wintercms/winter (Packagist)up to 1.2.3—No fix listedGHSA-8r5j-gm3j-cx9c
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • wintercms/winter (Packagist) Vendor— Affected up to 1.2.3 Fixed in — No fix listed GHSA-8r5j-gm3j-cx9c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wintercms:winter:1.2.3:*:*:*:*:*:*:*1.2.3Vulnerablewintercms
  • cpe:2.3:a:wintercms:winter:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·wintercms

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-29686
  2. 2026-10-03 Alias added: GHSA-8r5j-gm3j-cx9c

References

Exploit 1

Advisory 2

Other 2

  • TI-2023-28528 Winter CMS Local File Inclusion through Server Side Template Injection CVSS 3.1MEDIUM 5.4
  • TI-2022-18732 Winter vulnerable to Prototype Pollution in Snowboard framework CVSS 3.1CRITICAL 9.8
  • TI-2026-21979 Winter: Privilege escalation by authenticated backend users CVSS 3.1CRITICAL 10.0
  • TI-2024-36264 Winter CMS Modules allows a sandbox bypass in Twig templates leading to data modification and deletion CVSS 3.1HIGH 8.5
  • TI-2023-18899 Winter CMS vulnerable to stored XSS through privileged upload of SVG file CVSS 3.1MEDIUM 4.8
  • TI-2023-28527 Winter CMS Stored XSS through Backend ColorPicker FormWidget CVSS 3.1MEDIUM 5.4
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences