YOOtheme Zoo CVE-2026-75114

Q: What is the CVSS score of CVE-2026-75114?

CVE-2026-75114 has a CVSS 4.0 base score of 5.1 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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. EPSS exploitation probability: 0.3%.

Q: Which versions of YOOtheme Zoo are affected by CVE-2026-75114?

Open redirect in YOOtheme Zoo extension for Joomla (versions prior to 4.1.64) allows unauthenticated network attackers to redirect authenticated users to arbitrary external URLs.

EUVD-2026-62433 MEDIUM

URL Redirection to Untrusted Site (Open Redirect) (CWE-601)

2026-08-19 Joomla

GHSA-5w5r-gpcr-x5pw

Open Redirect Zoo Extension For Joomla

5.1

CVSS 4.0 · Vendor: Joomla

Severity by source

Vendor (Joomla) PRIMARY

5.1 MEDIUM

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

4.7 MEDIUM

Network-reachable with no privileges needed; requires victim interaction; scope changes to redirect victim externally; only low integrity impact, no confidentiality or availability effect.

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

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

Primary rating from Vendor (Joomla).

CVSS VectorVendor: Joomla

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

None

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Aug 19, 2026 - 14:18 vuln.today

DescriptionCVE.org

Joomla Extension - yootheme.com - Open redirect in CommentController::twitterAuthenticate() in Zoo < 4.1.64 - The referer request parameter is passed straight to setRedirect() with no validation.

AnalysisAI

Open redirect in YOOtheme Zoo extension for Joomla (versions prior to 4.1.64) allows unauthenticated network attackers to redirect authenticated users to arbitrary external URLs. The vulnerability exists in CommentController::twitterAuthenticate(), where the referer request parameter is forwarded without validation directly to setRedirect(). …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Craft URL with malicious referer parameter

Delivery

Send link to victim (phishing/social)

Exploit

Victim clicks and triggers twitterAuthenticate()

Execution

Zoo passes referer to setRedirect() unvalidated

Persist

Victim browser redirected to attacker site

Impact

Attacker harvests credentials or delivers malware

Access

Craft URL with malicious referer parameter

Delivery

Send link to victim (phishing/social)

Exploit

Victim clicks and triggers twitterAuthenticate()

Execution

Zoo passes referer to setRedirect() unvalidated

Persist

Victim browser redirected to attacker site

Impact

Attacker harvests credentials or delivers malware

Vulnerability AssessmentAI

Exploitation	The Zoo extension for Joomla must be installed and active on the target site. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.0 score of 5.1 (vector AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N) reflects a medium-severity issue: exploitation is network-accessible, requires no authentication, and no attack preconditions, but does require user interaction (UI:A) and impacts are confined to the subsequent system with low integrity effect. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker crafts a Joomla URL pointing to the Zoo CommentController::twitterAuthenticate() endpoint with a referer parameter set to an attacker-controlled phishing domain. The attacker distributes this link via email or social media; when a Joomla site visitor clicks it and completes the simulated Twitter authentication flow, they are transparently redirected to the malicious site. …
Remediation	Upgrade YOOtheme Zoo to version 4.1.64 or later, which is the confirmed fix version per the CVE description. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-75114 vulnerability details – vuln.today

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