CVE-2026-23695: Cockpit CMS 2.14.0 Stored XSS via Set Field Display Template
Cockpit CMS through version 2.14.0, patched in commit 72a83fc, contains a stored cross-site scripting vulnerability in the Set field type's Display template option, where the template string is processed by the $interpolate function using new Function() and rendered via Vue's v-html directive without sanitization. An attacker with content/:models/manage permission can inject arbitrary JavaScript into the Display template, which executes in the browser of any user viewing the collection items list.
Security readout for executives and security teams
Plain-English summary
Cockpit CMS has a stored XSS issue in an admin-facing field template setting. A user with model-management rights can save malicious browser script that later runs for other users viewing collection item lists. This can affect admin-session confidentiality and integrity, but sources do not indicate unauthenticated access or active exploitation.
Executive priority
Treat this as a moderate-priority administrative security fix. It is not reported as actively exploited, but it can run attacker-controlled script in other users’ browsers where Cockpit model-management rights are delegated.
Technical view
The Set field type’s Display template option is interpolated with $interpolate using new Function() and rendered with Vue v-html without sanitization. A low-privileged authenticated user holding content/:models/manage can persist JavaScript in that template. Execution occurs when another user views the collection items list, creating scoped confidentiality and integrity impact.
Likely exposure
Cockpit CMS deployments through 2.14.0 are exposed if users can access model management and create or modify Set field Display templates. Risk is higher on multi-user admin deployments or environments with broadly assigned content/:models/manage permission.
Exploitation context
The source bundle reports no KEV listing and provides no evidence of active exploitation. Exploitation requires authenticated access with content/:models/manage permission and user interaction by someone viewing the affected collection items list.
Researcher notes
Evidence is limited to the CVE record, patch reference, and VulnCheck advisory. The named vulnerable path is the Set field Display template. Do not assume broader Cockpit components are affected without additional vendor confirmation.
Mitigation direction
Apply the vendor patch commit or a vendor release containing it.
Restrict content/:models/manage permission to trusted administrators.
Review Set field Display templates for unexpected executable content.
Check Cockpit vendor guidance for any release-specific upgrade instructions.
Audit recent model-management changes in shared admin environments.
Validation and detection
Inventory Cockpit CMS instances and identify versions through 2.14.0.
Confirm whether patch commit 72a83fc is present in deployed code.
List users or roles with content/:models/manage permission.
Inspect Set field Display template values for suspicious HTML or script-like content.
Review access logs for recent model-management activity by non-admin users.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-79 · source CWE mapping
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.