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Crocoblock JetMenu EUVDEUVD-2026-97304

| CVE-2026-107865 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-10-12 Patchstack GHSA-j59j-cqr7-mgx6
6.5
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as low-privilege WordPress user
  2. Delivery
    Inject script into JetMenu field
  3. Exploit
    Payload stored in site content
  4. Execution
    Admin views affected menu
  5. Persist
    Script executes in admin browser
  6. Impact
    Hijack session or perform admin actions

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Exploitation Conditions

Exploitation requires an authenticated WordPress account with at least low-level content-authoring privileges (consistent with PR:L) able to submit input into a JetMenu field that is stored without proper output neutralization. Successful impact further requires a victim - typically an administrator or editor - to render/view the poisoned menu content (UI:R), at which point the stored script fires in their browser. Limiting factors: the attacker cannot be fully anonymous (some account access needed), a second privileged user must load the content, and sites that do not grant untrusted users authoring roles have a substantially reduced attack surface. Affected deployments are those running JetMenu 3.0.5 or earlier.

Impact

This is a stored Cross-Site Scripting (CWE-79) flaw in the Crocoblock JetMenu WordPress plugin (through 3.0.5), rated CVSS 6.5 (Medium) via CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. The vector indicates network-reachable, low-complexity exploitation but requires an authenticated low-privilege account (PR:L) and victim user interaction (UI:R), with a scope change (S:C) reflecting that injected script executes in a different security context (a victim's authenticated browser session). No EPSS score, CISA KEV listing, or public POC is present in the supplied intelligence, so there is no evidence of active exploitation - this is a typical Patchstack-reported WordPress plugin XSS rather than a high-priority emergency. The real-world risk is moderate and conditional: it depends on an attacker already holding a contributor/author-level account and an administrator subsequently viewing the poisoned content, which can escalate to admin session theft. Absence of EPSS/KEV/POC is expected for this class and is not itself a risk signal; the practical priority is standard patch-cycle remediation, elevated only where the site grants untrusted users content-authoring roles.

Exploit ScenarioDerived

An attacker with a low-privilege authenticated WordPress account (e.g., contributor or author) injects a malicious JavaScript payload into a JetMenu field that is stored and later rendered. When an administrator or other privileged user views the affected menu/page in wp-admin, the script executes in their browser context, enabling session hijacking or admin-action forgery. No public exploit code is identified at time of analysis, but the AC:L vector makes crafting the payload straightforward.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 12, 2026

Stored cross-site scripting in Crocoblock JetMenu (a WordPress mega-menu builder plugin) through version 3.0.5 lets an authenticated user with low-level content-authoring privileges inject script that is persisted and later executed in the browser of a higher-privileged viewer such as an administrator or editor. The flaw is rated CVSS 6.5 (Medium) under CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L, reflecting the need for a valid account (PR:L) and for a victim to render the poisoned menu content (UI:R), with scope change because the injected script runs in the victim's session context. No public exploit code has been identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV); risk is concentrated on sites that grant untrusted or low-privilege users menu/content authoring capabilities.

RemediationAI

Update Crocoblock JetMenu to a version newer than 3.0.5 as soon as a patched release is available; Patchstack's advisory (https://patchstack.com/database/wordpress/plugin/jet-menu/vulnerability/wordpress-jetmenu-plugin-3-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve) is the reference to confirm the fixed version, and no vendor-patched version number can be confirmed from the available data. If immediate upgrade is not possible, reduce exposure by ensuring that only fully trusted administrators can create or edit JetMenu menu structures and by removing content-authoring (Contributor/Author) capabilities from users who should not be trusted with menu input; this is an effective control because exploitation requires an account able to submit menu field content, but it does not protect against a malicious insider with those privileges. Complement this by deploying a WordPress-aware WAF or the Patchstack-style virtual patching layer with XSS rules covering the jet-menu plugin routes, keeping WordPress core, Elementor and other Crocoblock plugins updated, and monitoring administrator sessions for unexpected script-driven redirects or setting changes.

Affected VersionsENISA

JetMenu 0 ≤3.0.5

Affected Packages

euvd jetmenu 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.

Technical ContextAI · show details

The vulnerability is a classic CWE-79 improper neutralization of input during web page generation, manifesting as stored (persistent) XSS in the WordPress plugin Crocoblock JetMenu, which is used to build customizable mega menus for WordPress sites. The CPE cpe:2.3:a:crocoblock:jetmenu:*:*:*:*:*:*:*:* identifies the Crocoblock JetMenu plugin as the affected component, with versions from n/a through 3.0.5 vulnerable. Because JetMenu fields are saved into the WordPress database and later emitted into menu markup, input that is not escaped on output is stored and replayed to every user who views the affected menu, including administrators. The CVSS vector's scope change (S:C) and low integrity/confidentiality/availability impacts indicate the injected script can act within the privileges of the viewing user's browser session, enabling cookie/session theft, malicious redirects, or unauthorized administrative actions via CSRF-style chained requests.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 6.5 MEDIUM

Authenticated low-privilege user stores the payload (PR:L), a victim must view it (UI:R), and execution in the victim's browser context justifies scope change (S:C) with limited C/I/A impact.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetMenu jet-menu allows Stored XSS.This issue affects JetMenu: from n/a through 3.0.5.

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Prevalence
Medium
popular commercial Crocoblock/Elementor mega-menu plugin, moderate install base
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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