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  4. CVE 2026 73336 joomla core 20260806 xss through schemaorg
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Back to active CVEs
Medium · CVSS 5.1CVE-2026-73336

Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2

Answer in brief

CVE-2026-73336 records a Medium severity (CVSS 5.1) vulnerability in Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2. The current sources do not mark it as known exploited. The current feed maps Joomla! Project/Joomla! 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 Aug 18, 2026Updated Sep 3, 2026Source checked Oct 3, 2026First seen by HOL Aug 18, 2026Material review Sep 3, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
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 Joomla! Project/Joomla! CMS (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Joomla! Project/Joomla! CMSgeneric5.1.0-5.4.6 || 6.0.0-6.1.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Joomla! Project/Joomla! 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

    Aug 18, 2026

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

  2. Source modified

    Sep 3, 2026

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

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • Source referencedeveloper.joomla.org
  • Source referencejoomla.org
  • Source referencedeveloper.joomla.org
Upstream source description

Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2 - Improper escaping flags lead to an XSS vector in schema.org markup outputs.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • IDURAR ERP CRM through 4.1.1 Stored XSS via SVG UploadAlso CWE-79
  • Showdown through 2.1.0 XSS via unescaped quote in href and src attributesAlso CWE-79
  • Shopclass before 6.2.0 Stored XSS via Listing Description FieldAlso CWE-79
  • CodeArt Google MP3 Audio Player 1.0.11 Arbitrary File Read via direct_download.phpSame generic ecosystem
  • Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFileSame generic ecosystem
  • H3C CVM Unauthenticated File Upload via fileUpload/upload TokenSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 3, 2026
References
3 linked sources
Open source record