What is the CVSS score of CVE-2026-64791?

CVE-2026-64791 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Regular Labs Extension Manager Extension For Joomla CVE-2026-64791

EUVD-2026-47805 HIGH

Cross-Site Request Forgery (CSRF) (CWE-352)

2026-07-22 Joomla

CSRF Regular Labs Extension Manager Extension For Joomla Regularlabs Com

8.8

CVSS 3.1 · Vendor: Joomla

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Vulnerability Assessment

Weakness

CWE

CWE-352

OWASP Top 10:2025

A01:2025 - Broken Access Control

ASVS 5.0

V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies

MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 27, 2026

Insufficient access controls in Regular Labs Extension Manager for Joomla (versions 1.0.0–9.2.5) allow an unauthenticated attacker via CSRF or a low-privilege backend user to install, update, or remove extensions. Successful exploitation can lead to complete site compromise through the installation of a malicious extension. EPSS probability is low (0.13%) and no active exploitation or public exploit code has been identified.

Affected VersionsENISA

Regular Labs Extension Manager extension for Joomla 1.0.0-9.2.5

Affected Packages

euvd regular_labs_extension_manager_extension_for_joomla no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Joomla) PRIMARY 8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from Vendor (Joomla) · only source for this CVE.

CVSS VectorVendor: Joomla

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVSS changed

Jul 27, 2026 - 18:22 NVD

8.8 (HIGH)

CVE Published

Jul 22, 2026 - 20:40 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 22, 2026 - 20:40 cve.org

HIGH 8.8

DescriptionCVE.org

Administrator routes and install/update/uninstall processing did not consistently enforce component-management and installation permissions. An unauthorized backend user or CSRF attack could install, update or remove extensions.

Threat Intelligence Overview

EPSS Score

0.1%

Top 97% exploitable

Social Media

Sightings

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.