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  4. CVE 2026 109392 pimcore through 202631 stored xss via
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Back to active CVEs
Medium · CVSS 5.1CVE-2026-109392

Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version PreviewCVE-2026-109392

Answer in brief

CVE-2026-109392 records a Medium severity (CVSS 5.1) vulnerability in Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version Preview. The current sources do not mark it as known exploited. The current feed maps Pimcore/Pimcore (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 Oct 12, 2026Updated Oct 12, 2026Source checked Oct 12, 2026First seen by HOL Oct 12, 2026Material review Oct 12, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.1. 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 Pimcore/Pimcore (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Pimcore/Pimcoregeneric>=0 <=2026.3.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Pimcore/Pimcore.
  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

    Oct 12, 2026

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

  2. Source modified

    Oct 12, 2026

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

  3. First seen by HOL

    Oct 12, 2026

Sources and claim methodology

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

Pimcore through 2026.3.1 contains a stored cross-site scripting vulnerability that allows authenticated backend users to inject scripts by storing unescaped URLs in ExternalImage fields. Attackers with data object edit permission can store attribute-breaking payloads that execute JavaScript in the admin origin when other users open version preview or diff views.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Admidio 4.0.12 through 4.3.17 and 5.0.0 before 5.0.15 Reflected XSS via system/redirect.phpAlso CWE-79
  • Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration NameAlso CWE-79
  • DOMPurify from 3.4.13 before 3.4.16 DOM XSS via IN_PLACE afterSanitize HooksAlso CWE-79
  • DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext RootAlso CWE-79
  • LibreNMS before 26.9.0 Stored XSS via wireless sensor descriptionAlso CWE-79
  • LibreNMS before 26.9.0 Stored XSS via Tools Oxidized Node ListAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 12, 2026
References
5 linked sources
Open source record