YOOtheme Zoo EUVD-2026-62433

Q: What is the CVSS score of EUVD-2026-62433?

EUVD-2026-62433 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 EUVD-2026-62433?

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.

| CVE-2026-75114 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(). …

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

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.

More in Open Redirect

View all

CVE-2017-1000117 HIGH Act Now POC

8.8 Oct 05

A malicious third-party can give a crafted "ssh://..." URL to an unsuspecting victim, and an attempt to visit the URL ca

CVE-2024-52875 HIGH Act Now POC

8.8 Jan 31

GFI Kerio Control versions 9.2.5 through 9.4.5 contain an HTTP response splitting vulnerability in the dest parameter of

CVE-2016-5385 HIGH Act Now POC

8.1 Jul 19

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect

CVE-2013-2248 MEDIUM This Month POC

5.8 Jul 20

Multiple open redirect vulnerabilities in Apache Struts 2.0.0 through 2.3.15 allow remote attackers to redirect users to

CVE-2012-6499 MEDIUM This Month POC

5.8 Jan 12

Open redirect vulnerability in age-verification.php in the Age Verification plugin 0.4 and earlier for WordPress allows

CVE-2015-2863 MEDIUM This Month POC

4.3 Jul 20

Open redirect vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before 8.0.0.18, 9.0 b

CVE-2017-3528 MEDIUM This Month POC

5.4 Apr 24

Vulnerability in the Oracle Applications Framework component of Oracle E-Business Suite (subcomponent: Popup windows (li

CVE-2012-0518 MEDIUM Act Now

4.7 Oct 16

Unspecified vulnerability in the Oracle Application Server Single Sign-On component in Oracle Fusion Middleware 10.1.4.3

CVE-2024-21641 MEDIUM This Month POC

6.5 Jan 05

Flarum is open source discussion platform software. Rated medium severity (CVSS 6.5), this vulnerability is remotely exp

CVE-2015-5354 MEDIUM This Month POC

5.8 Jul 01

Open redirect vulnerability in Novius OS 5.0.1 (Elche) allows remote attackers to redirect users to arbitrary web sites

CVE-2015-5461 MEDIUM This Month POC

6.4 Jul 08

Open redirect vulnerability in the Redirect function in stageshow_redirect.php in the StageShow plugin before 5.0.9 for

CVE-2024-22891 CRITICAL Act Now POC

9.8 Mar 01

Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link. Rated crit

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

View all

CVE-2017-1000117 HIGH POC

8.8

CVE-2016-5385 HIGH POC

8.1

CVE-2017-3528 MEDIUM POC

5.4

CVE-2012-0518 MEDIUM

4.7

CVE-2024-21641 MEDIUM POC

6.5

CVE-2015-5354 MEDIUM POC

5.8

CVE-2024-22891 CRITICAL POC

9.8

CVE-2022-40083 CRITICAL POC

9.6

EUVD-2026-62433 vulnerability details – vuln.today

Back