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  4. CVE 2026 81926 concrete cms 940 through 952 is vulnerable to
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Back to active CVEs
Low · CVSS 2.0CVE-2026-81926

Concrete CMS 9.4.0 through 9.5.2 is vulnerable to Cross-site scripting in the location panel duplicate-path confirmation dialogCVE-2026-81926

Answer in brief

CVE-2026-81926 records a Low severity (CVSS 2.0) vulnerability in Concrete CMS 9.4.0 through 9.5.2 is vulnerable to Cross-site scripting in the location panel duplicate-path confirmation dialog. The current sources do not mark it as known exploited. The current feed maps Concrete CMS/Concrete CMS (generic), Concrete CMS/Concrete CMS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 21, 2026Source checked Oct 31, 2026First seen by HOL Sep 15, 2026Material review Sep 21, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.0
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 2.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Concrete CMS/Concrete CMS (generic), Concrete CMS/Concrete CMS (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Concrete CMS/Concrete CMSgeneric9.4.0Not reported
Concrete CMS/Concrete CMSgeneric>=9.4.0 <=9.5.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Concrete CMS/Concrete CMS, Concrete CMS/Concrete CMS.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 15, 2026

Sources and claim methodology

  • Source referencedocumentation.concretecms.org
Upstream source description

Concrete CMS 9.4.0 through 9.5.2 did not escape colliding page paths before rendering them in the location panel's duplicate-path confirmation dialog. The panel's check endpoint returned the submitted path unmodified in its JSON response, and client-side JavaScript inserted each value into the dialog as raw HTML, so a crafted page path executed script in the editor's authenticated browser session. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • PDF Invoices & Packing Slips for WooCommerce 5.16.2 - 5.16.4 - Unauthenticated Stored XSS via Order Address and Customer Note FieldsAlso CWE-79
  • Shopper: same-origin SVG and HTML uploads enable stored XSS and persistent administrator creationAlso CWE-79
  • AdminNeo Vulnerable to XSS via Rogue MySQL Server Version String (CSP Nonce Bypass)Also CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 31, 2026
References
1 linked source
Open source record