CVE-2026-125340

What it is

Winter CMS is a content management system built on the Laravel PHP framework. From 1.0.420 until 1.2.14, the backend Table widget partial modules/backend/widgets/table/partials/_table.php emits the search query parameter without HTML encoding inside a script template. A script-closing sequence in a crafted top-level GET URL terminates the raw-text template and causes the remaining input to be parsed as backend markup, even when the widget uses searching: false. Any Table or DataTable page is a sink, including the core Editor Settings route /backend/system/settings/update/winter/backend/editor, and an unauthenticated attacker can induce an authorized backend user to follow the link. Script executing in the victim's backend origin can read the CSRF token and issue credentialed requests with that user's permissions. For the core sink, a victim with backend.manage_editor, normally a Developer-role user or superuser, can edit CMS templates, so the injected script can conditionally chain to server-side code execution; this does not grant permissions the victim lacks and does not apply automatically to every third-party plugin sink. This issue is fixed in version 1.2.14.

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. High risk of data tampering.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-11-09 21:22 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-11-10 20:19 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-11-10 20:19 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 4.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-11-10 20:19 UTC

Last modified

2026-11-10 20:19 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Received

Attack profile CVSS 3.1 · 4.5

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-125340.md and follow it. Check whether this project is affected by CVE-2026-125340. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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