Which versions of Joomla are affected by CVE-2025-54301?

Organizations using A stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla face significant risk from CVE-2025-54301, a cross-site scripting vulnerability rated CVSS 8.5.

How to fix or mitigate CVE-2025-54301?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Verify anti-CSRF tokens and content security policies are enforced.

Joomla CVE-2025-54301

Q: What is the CVSS score of CVE-2025-54301?

CVE-2025-54301 has a CVSS 4.0 base score of 8.5 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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. EPSS exploitation probability: 0.1%.

HIGH

Cross-site Scripting (XSS) (CWE-79)

2025-08-25 security@joomla.org

XSS Joomla

8.5

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

8.5 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:08 vuln.today

CVE Published

Aug 25, 2025 - 07:15 nvd

HIGH 8.5

DescriptionCVE.org

A stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla was discovered. File names are not properly escaped.

AnalysisAI

A stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla was discovered. Rated high severity (CVSS 8.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla was discovered. File names are not properly escaped.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-54301 vulnerability details – vuln.today

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