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WP Cookie Notice CVE-2026-42636

| EUVDEUVD-2026-93058 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-10-06 Patchstack GHSA-qx24-3mr5-jjvr
7.1
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
    Craft malicious link with XSS payload
  2. Delivery
    Lure WordPress user to click (phishing)
  3. Exploit
    Plugin reflects unsanitized input
  4. Execution
    Script executes in victim browser
  5. 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 that a WordPress site run the WP Cookie Notice for GDPR, CCPA & ePrivacy Consent plugin at version 4.4.6 or earlier, and that an attacker get a victim (site visitor or logged-in administrator) to interact with attacker-controlled input - per CVSS UI:R, typically by clicking a crafted link or submitting a poisoned request that the plugin renders without sanitization. The principal limiting factor is this mandatory user interaction: no victim action means no code execution. No special plugin configuration is cited as a prerequisite, and the attacker needs no authentication (PR:N).

Impact

This is a moderate-severity, moderate-priority issue rather than an emergency. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, base 7.1) describes a network-reachable, low-complexity, unauthenticated flaw, but the UI:R requirement means a victim must be tricked into interacting (e.g. clicking a crafted link or visiting a malicious page), which materially lowers real-world exploitability compared to a no-interaction flaw. The scope change (S:C) and the low C/I/A impacts are consistent with a classic Cross-Site Scripting bug (CWE-79) where script executes in the victim's browser session rather than compromising the server directly. No EPSS score, no CISA KEV listing, and no public exploit (POC) are present in the supplied data, so exploitation status is 'no public exploit identified at time of analysis'; the absence of these signals, combined with the UI:R requirement, points to opportunistic/phishing-style abuse rather than mass automated exploitation. No signals conflict here - the CVSS vector, description ('Unauthenticated XSS'), and CWE all agree. The main uncertainty is whether the XSS is reflected or stored, which the single-sentence description and lone Patchstack reference do not clarify.

Exploit ScenarioDerived

An attacker crafts a malicious link or request carrying JavaScript that the vulnerable WP Cookie Notice plugin (<= 4.4.6) reflects or renders without proper sanitization, then lures a site visitor or administrator into triggering it. When the victim's browser processes the page, the injected script runs in the site's context, enabling session/cookie theft, defacement, or forced admin actions. No public exploit code was identified in the provided data, and successful attack requires the victim's interaction (UI:R).

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 06, 2026

Unauthenticated cross-site scripting in the WP Cookie Notice for GDPR, CCPA & ePrivacy Consent WordPress plugin affects versions 4.4.6 and earlier, allowing remote attackers to inject script that executes in a victim's browser when that victim interacts with attacker-controlled input. Per the CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), no authentication is required and the attacker is remote, but exploitation is gated on user interaction - a site visitor or logged-in administrator must click a crafted link or submit a poisoned request that the plugin renders without proper sanitization; no victim action means no code execution. No public exploit code has been identified at time of analysis and the issue is not reported as actively exploited, so it should be treated as a moderate-severity, moderate-priority plugin hardening issue rather than an emergency, though the scope-change characteristic (S:C) means successful script execution can reach beyond the vulnerable component into the hosting WordPress site's origin.

RemediationAI

The provided data does not confirm a vendor-released fix version, so no exact patched release can be cited; the primary action is to consult the Patchstack advisory for WP Cookie Notice for GDPR, CCPA & ePrivacy Consent (https://patchstack.com/database/wordpress/plugin/gdpr-cookie-consent/vulnerability/wordpress-wp-cookie-notice-for-gdpr-ccpa-eprivacy-consent-plugin-4-4-6-cross-site-scripting-xss-vulnerability) and upgrade the plugin to the first release above 4.4.6, which is where the advisory's version bound places the fix - do not treat 4.4.6 as remediated. If an immediate plugin update is not possible, compensating controls should target the user-interaction and rendering vectors: deploy a web application firewall or reverse-proxy rule set that inspects and blocks XSS payloads in query strings and POST parameters reaching the WordPress front end (effective against reflected payloads, but rule evasion is possible and legitimate consent-banner parameters must be allow-listed to avoid breakage), and temporarily deactivate the plugin if consent-banner functionality can be provided by another mechanism (removes the attack surface entirely but may create GDPR/ePrivacy consent-compliance gaps during the outage). Because exploitation requires victim interaction (UI:R), user awareness measures such as caution with unsolicited links are supplementary only; they are not a substitute for patching. Verify the installed plugin version from the WordPress admin Plugins page or via WP-CLI (wp plugin list --name=gdpr-cookie-consent) before and after remediation, and re-check the advisory for a confirmed patched release number.

Affected VersionsENISA

WP Cookie Notice for GDPR, CCPA & ePrivacy Consent n/a ≤4.4.6

Affected Packages

euvd wp_cookie_notice_for_gdpr_ccpa_eprivacy_consent 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 (cross-site scripting) in a WordPress plugin. WP Cookie Notice for GDPR, CCPA & ePrivacy Consent is a consent-management/banner plugin maintained by WP Legal Pages that writes cookie-consent UI elements - banners, notices and related markup - into pages rendered for site visitors. Because the plugin outputs attacker-influenceable input without adequate output encoding or sanitization, a crafted request or link can cause script to be reflected into the page returned to the victim. The CPE identifier cpe:2.3:a:wp_legal_pages:wp_cookie_notice_for_gdpr,_ccpa_&_eprivacy_consent:*:*:*:*:*:*:*:* with the version-bounded advisory title "<= 4.4.6" confirms the affected product line and that all releases up to and including 4.4.6 are in scope. The CVSS vector's PR:N confirms the flaw is unauthenticated (any remote party can craft the payload), while UI:R and S:C reflect that a victim must be induced to trigger rendering and that the injected script executes in the security context of the WordPress site's origin - enabling cookie/session theft, consent-banner defacement, or redirection of visitors - rather than being confined to the vulnerable plugin component alone.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 7.1 HIGH

Network-reachable unauthenticated XSS (AV:N/PR:N) but needs victim interaction (UI:R); script runs cross-context (S:C) with limited C/I/A impact in the browser session.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/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
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in WP Cookie Notice for GDPR, CCPA & ePrivacy Consent <= 4.4.6 versions.

Executive ViewAI

Why It Matters

The WP Cookie Notice for GDPR, CCPA & ePrivacy Consent plugin, deployed on public-facing WordPress sites to serve legally required consent banners, contains a high-severity cross-site scripting flaw in versions 4.4.6 and earlier that can execute attacker-supplied script in the browsers of site visitors and logged-in administrators who interact with crafted input. Because the flaw can reach beyond the plugin's own boundary into the surrounding site and admin session context, and no vendor-released patch is currently available, every organization running this banner on customer-facing or marketing properties carries unresolved exposure. Leadership should treat this as a prioritized hardening item rather than an incident-level emergency: no public exploit has been identified at time of analysis, the issue is not reported as actively exploited, and successful abuse requires a victim to click a crafted link or submit a poisoned request.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deploy WAF/edge virtual patching or blocking rules for script-bearing input to the plugin's consent-notice endpoints and parameters; if virtual patching is not reliable, deactivate the plugin and use an alternative consent mechanism; enforce a Content Security Policy that disallows inline and untrusted script; apply strict output encoding/sanitization at the theme or reverse-proxy layer for consent banner content; require MFA and short session timeouts for administrators to limit session-token theft from script execution; and restrict wp-admin and plugin endpoint access to trusted networks or IP allowlists.

Threat Intelligence Overview

EPSS Score
0.3%
Top 85% exploitable
Prevalence
Medium
popular WordPress GDPR/cookie-consent plugin, common but not universal
Data Quality
5 sources
Confidence: Medium

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 0.3%
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.

SSVC AssessmentENISA

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

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
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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