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Element Pack EUVDEUVD-2026-81495

| CVE-2026-66574 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-09-17 Patchstack GHSA-44q9-q9hf-rg74
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
    Obtain Contributor account on target site
  2. Delivery
    Inject XSS payload via Element Pack field
  3. Exploit
    Await admin/editor viewing content
  4. Execution
    Script executes in privileged session
  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

Requires an authenticated WordPress Contributor-level (or higher) account on a site running BDThemes Element Pack Elementor Addons <= 8.8.3, plus victim interaction: a higher-privileged user (editor/administrator) must subsequently view the attacker-supplied content for the injected script to execute (UI:R). Exploitation is therefore limited by the need for a valid low-privileged account and a triggering victim view; it does not work against fully unauthenticated visitors and is not a default-config remote-code path.

Impact

This is a moderate-severity authenticated stored/reflected XSS, not an urgent priority. The vendor (Patchstack) CVSS 3.1 6.5 vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L is internally consistent with a Contributor-level XSS: network-reachable and low-complexity, but gated behind PR:L (a valid Contributor account) and UI:R (a victim, typically an editor/admin, must view the injected content). The scope change (S:C) and low C/I/A reflect script execution crossing from the plugin's rendering context into the victim's browser session. No EPSS score, no CISA KEV listing, and no public POC are present in the supplied data, so exploitation status is 'no public exploit identified at time of analysis.' The realistic risk is a malicious or compromised low-privileged contributor escalating toward an admin session rather than mass remote compromise - a manageable patch-cycle item, not an emergency. Note the input carries no fix version, so remediation timing cannot be confirmed from the data.

Exploit ScenarioDerived

An attacker who holds (or has phished/registered) a WordPress Contributor account on a site running BDThemes Element Pack <= 8.8.3 saves a post or Elementor widget containing a crafted XSS payload in a field that the plugin fails to sanitize/escape. When an administrator or editor later previews or opens that content in wp-admin, the script executes in their authenticated browser session, enabling session/cookie theft or admin actions. No public exploit code is identified in the provided data.

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 – Sep 17, 2026

Stored/reflected cross-site scripting in the BDThemes Element Pack Elementor Addons WordPress plugin (versions up to and including 8.8.3) allows an authenticated Contributor-level user to inject script-bearing content that executes in the browser of a higher-privileged user who later views it, rated CVSS 6.5 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L). Successful exploitation requires a valid low-privileged WordPress account on a site running the vulnerable plugin plus victim interaction (an editor or administrator opening the injected post/page or admin view); it is not exploitable by anonymous visitors and is not a default-configuration remote-code path. At time of analysis there is no public exploit identified and the issue is not in CISA KEV, so this is a moderate-severity, patch-management priority rather than an emergency.

RemediationAI

The provided intelligence does not include an independently confirmed fix version or vendor patch reference, so the primary remediation is to update Element Pack Elementor Addons to the earliest release above the affected ceiling of 8.8.3, checking the BDThemes changelog and the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/bdthemes-element-pack-lite/vulnerability/wordpress-element-pack-elementor-addons-plugin-8-8-3-cross-site-scripting-xss-vulnerability?_s_id=cve) for the exact patched build before rolling out - expect to validate informally documented release notes rather than a published CVE-linked version. If an immediate upgrade is not possible, compensating controls that directly address the authenticated-injection path are: temporarily deactivate the plugin on sites where Element Pack widgets are not essential (the only control that fully removes the attack surface, at the cost of losing those layouts until patched); audit and reduce the number of Contributor and Author accounts and remove Contributor rights from untrusted users, since the vector requires PR:L (this shrinks but does not eliminate risk, as any legitimate Contributor remains a viable source); and instruct editors/administrators not to open or preview pending content from untrusted authors until patched, which blunts the UI:R trigger but degrades editorial workflow. A WAF or WordPress security plugin rule that blocks script/HTML event-handler payloads in Element Pack widget fields or in pending-post previews can add detection coverage, though obfuscation can bypass signature-based rules and no rule should be treated as a substitute for the upgrade.

Affected VersionsENISA

Element Pack Elementor Addons n/a ≤8.8.3

Affected Packages

euvd element_pack_elementor_addons 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 flaw is CWE-79 (Improper Neutralization of Input During Web Page Generation, i.e. cross-site scripting) in the Element Pack Elementor Addons plugin by BDThemes, a WordPress plugin that adds Elementor page-builder widgets and blocks. The affected component is identified by CPE cpe:2.3:a:bdthemes:element_pack_elementor_addons:*:*:*:*:*:*:*:*, covering all releases through 8.8.3, and EUVD-2026-81495 lists the same affected range. Because the CVSS scope is Changed (S:C) and the privilege requirement is PR:L with UI:R, the plugin fails to sanitize or escape attacker-controlled input supplied at a low privilege level, and the payload is later rendered in a context trusted by a higher-privileged user, so script executes with the victim's session privileges. The PR:L/PR:N distinction matters here: the vector confirms an authenticated attacker (WordPress Contributor level or above), and UI:R confirms that a separate victim must view the crafted content before the script runs - there is no unauthenticated vector and no self-contained remote code execution chain.

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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

Contributor account gives PR:L, an admin/editor must view the payload so UI:R, script escapes into the victim's session giving S:C with limited C/I/A - matching the vendor vector.

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:L/VI:L/VA:L/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

Contributor Cross Site Scripting (XSS) in Element Pack Elementor Addons <= 8.8.3 versions.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Medium
popular BDThemes Elementor addon, widely installed but not ubiquitous
Data Quality
4 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 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· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

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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