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  4. CVE 2023 54423 openmage magento lts before 2020 stored xss via
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Back to active CVEs
High · CVSS 8.3CVE-2023-54423

OpenMage magento-lts before 20.2.0 Stored XSS via TinyMCE WYSIWYG EditorCVE-2023-54423

Answer in brief

CVE-2023-54423 records a High severity (CVSS 8.3) vulnerability in OpenMage magento-lts before 20.2.0 Stored XSS via TinyMCE WYSIWYG Editor. The current sources do not mark it as known exploited. The current feed maps OpenMage/magento-lts (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 Nov 13, 2026Updated Nov 13, 2026Source checked Nov 13, 2026First seen by HOL Nov 13, 2026Material review Nov 13, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.3. 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 OpenMage/magento-lts (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
OpenMage/magento-ltsgeneric>=0 <20.2.020.2.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for OpenMage/magento-lts.
  2. 2Review the reported fix. Update OpenMage/magento-lts to 20.2.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 13, 2026

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

  2. Source modified

    Nov 13, 2026

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

  3. First seen by HOL

    Nov 13, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-82
Source
CVE List V5
Source checked
Nov 13, 2026
References
2 linked sources
Open source record