CVE-2026-18119

Software Component Vulnerability Advisory (CWE-Not-Specified)

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CyberVault Technical Summary

Analyst Synthesis

Security vulnerability CVE-2026-18119 affecting Generic/Unknown Software Component. Evaluated with CVSS Base Score of N/A (UNKNOWN).

Original NVD Description

Source: NIST NVD

Concrete CMS below 9.5.3 did not sanitize custom style values in the Block Design dialog before writing them into page CSS via a DOM sink, permitting stored cross-site scripting. An editor-level user could execute script in an administrator's session and escalate privileges. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 7.0 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Nguyen Manh Thuan for reporting.

📊 CVSS v3.1 Metric Breakdown

🎯 Affected Versions Matrix

Affected Product	Generic/Unknown / Software Component
Affected Versions	Unspecified
Weakness Enumeration	CWE-Not-Specified

🛡️ Remediation & Security Action

Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
Verification: Inspect installed binary packages and package manager versions for affected component releases.
Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.

⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

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Technical Analysis

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Risk Snapshot

N/A

UNKNOWN SEVERITY

CVE ID CVE-2026-18119

Weakness CWE-Not-Specified

Vendor Generic/Unknown

Product Software Component

Published 2026-09-14

Vector N/A

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