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Joomla! CMS EUVDEUVD-2026-61032

| CVE-2026-73336 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-08-18 Joomla GHSA-qfmv-g6h7-3f6w
XSS Joomla Cms
5.1
CVSS 4.0 · Vendor: Joomla
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Severity by source

Vendor (Joomla) PRIMARY
5.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
4.8 MEDIUM

Network delivery with high privilege required; UI:R reflects victim must load the affected page; S:C applies as XSS crosses the browser security boundary into the victim session.

3.1 AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Joomla).

CVSS VectorVendor: Joomla

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 17:07 vuln.today
CVE Published
Aug 18, 2026 - 16:06 cve.org
MEDIUM 5.1

DescriptionCVE.org

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.

AnalysisAI

Cross-site scripting in Joomla! CMS versions 5.1.0-5.4.7 and 6.0.0-6.1.2 exposes sites to stored XSS through improperly escaped schema.org structured-data markup output. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as high-privilege CMS user
Delivery
Inject XSS payload into schema.org content fields
Exploit
Payload stored in CMS database
Execution
Victim loads affected page
Persist
Malicious script executes in victim browser
Impact
Session tokens or page data exfiltrated
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated session with high-privilege Joomla! … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 5.1 with PR:H accurately characterizes a constrained attack surface: only accounts holding high-level CMS privileges can inject the payload, which sharply limits the realistic attacker pool to insiders, compromised administrator accounts, or adversaries who have already obtained privileged credentials through a prior step. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A malicious or compromised Joomla! administrator injects a crafted JavaScript payload into a content field rendered as schema.org structured-data output - such as an article description, organization name, or custom metadata field. …
Remediation Patch available per vendor advisory - site operators should apply the update published by the Joomla! … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-61032 vulnerability details – vuln.today
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