CVE-2024-54149Network attack vector

Authenticated data modification via incomplete Twig restrictions

Published Dec 9, 2024 · Updated Dec 10, 2024

Sandbox bypass in Winter CMS before 1.0.476, 1.1.0 through 1.1.10, and 1.2.0 through 1.2.6 lets remote authenticated users alter data. The CMS Twig SecurityPolicy omitted restrictions on write and delete methods for live model and datasource objects, allowing template code to invoke them directly. Backend access with cms.manage_layouts, cms.manage_pages, or cms.manage_partials is required; reachable records, theme settings, and templates can be changed or deleted.

CVSS severity8.4
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox bypass in Winter CMS before 1.0.476, 1.1.0 through 1.1.10, and 1.2.0 through 1.2.6 lets remote authenticated users alter data. The CMS Twig SecurityPolicy omitted restrictions on write and delete methods for live model and datasource objects, allowing template code to invoke them directly. Backend access with cms.manage_layouts, cms.manage_pages, or cms.manage_partials is required; reachable records, theme settings, and templates can be changed or deleted.

The record

CVE
CVE-2024-54149
Published
Dec 9, 2024
Updated
Dec 10, 2024
Vendor
Winter CMS
Product
Winter CMS
Classifications
CWE-184, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.0.476
  2. Affected versionversion=>= 1.1.0, < 1.1.11
  3. Affected versionversion=>= 1.2.0, < 1.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Winter CMS · Winter CMSversion=< 1.0.476; version=>= 1.1.0, < 1.1.11; version=>= 1.2.0, < 1.2.7

Published CVSS scores

8.4GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-184Incomplete List of Disallowed Inputs
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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