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If-So Dynamic Content CVE-2026-104740

| EUVDEUVD-2026-111745 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-10-28 Wordfence GHSA-qrm9-mc67-x9f8
6.4
CVSS 3.1 · Vendor: Wordfence
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Attack ChainAIDerived

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

  1. Access
    Obtain contributor-level account
  2. Delivery
    Inject payload via conversion shortcode attribute
  3. Exploit
    Store unsanitized script in page content
  4. Execution
    Victim or admin opens the page
  5. Impact
    Arbitrary JavaScript executes in their browser

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 account with contributor-level privileges or higher on a WordPress site where the If-So Dynamic Content plugin (version ≤1.10.2) is installed and active, and the attacker must be able to insert the plugin's 'conversion' shortcode with a malicious attribute into content. The payload is stored, so the script fires only when another user (visitor, editor, or administrator) subsequently accesses the page containing the injected shortcode. Limiting factors: the contributor-or-above authentication requirement (no anonymous exploitation), dependence on the plugin being installed/active, and the need for a victim to view the affected page for impact to occur.

Impact

This is a moderate, not emergency-grade, risk. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N, 6.4) indicates a network-reachable, low-complexity stored XSS that requires authentication at contributor level (PR:L) and no user interaction to inject, with a scope change (S:C) because injected script executes in the browsers of other users who view the page. The practical barrier is the PR:L requirement: an attacker must already hold a contributor-or-above account on the target WordPress site, which limits mass, unauthenticated exploitation and makes this most relevant to multi-author sites or sites where low-privilege accounts can be registered. No EPSS score, CISA KEV listing, or public exploit was provided in the input, so there is no public exploit identified at time of analysis and no evidence of active exploitation; the only exploitation signal is the vendor (Wordfence) report and a committed patch. The vuln.today decision label is 'this_month', consistent with a real but non-urgent remediation priority rather than an act-now/emergency classification. No signals conflict here - all point to a genuine but authentication-gated, lower-impact (C:L/I:L/A:N) stored XSS.

Exploit ScenarioDerived

An attacker who holds or obtains a contributor-level account on a WordPress site running If-So Dynamic Content submits content containing the 'conversion' shortcode with a crafted attribute carrying a JavaScript payload, which is stored without sufficient sanitization. When an administrator, editor, or site visitor later views the page rendering that shortcode, the script executes in their browser session. No public exploit code was provided in the input.

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 28, 2026

Stored cross-site scripting in the If-So Dynamic Content - Elementor & All Page Builders Personalization plugin for WordPress (all versions up to and including 1.10.2) allows authenticated users with contributor-level access or above to inject arbitrary script into a page through the 'conversion' shortcode attribute, which then executes in the browser of any user who later views that page. The flaw is a sanitization and output-escaping failure in the plugin's extended shortcodes handler, rated CVSS 6.4 with a scope change because the injected script runs in the security context of other users rather than the attacker. No public exploit code has been identified at time of analysis and the issue is not in CISA KEV; the assessed risk is moderate and not emergency-grade, with the contributor-or-above prerequisite and the need for a victim to open the affected page as the main limiting factors.

RemediationAI

Apply the upstream fix contained in the plugin's trunk changeset 3748902 for extensions/ifso-extended-shortcodes/extended-shortcodes.php (https://plugins.trac.wordpress.org/changeset/3748902/if-so/trunk/extensions/ifso-extended-shortcodes/extended-shortcodes.php); a tagged patched release version is not independently confirmed in the provided data, so confirm the fixed version on the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/3673560a-6f72-42ea-8b0d-f866dca33638?source=cve) before rolling out. Because exploitation requires an authenticated contributor-or-above account and a stored 'conversion' shortcode payload, interim risk reduction means restricting contributor and higher roles to trusted users, reviewing existing posts for injected 'conversion' shortcode attributes, and - if the plugin cannot be updated promptly - deactivating If-So Dynamic Content, accepting the loss of its personalization features until a patched build is installed.

Affected VersionsENISA

If-So Dynamic Content – Elementor & All Page Builders Personalization 0 ≤1.10.2

Affected Packages

euvd if_so_dynamic_content_elementor_all_page_builders_personalization 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 CWE-79 (Improper Neutralization of Input During Web Page Generation, i.e. cross-site scripting) in the WordPress plugin If-So Dynamic Content, which provides conditional and personalized content shortcodes for Elementor and other page builders. Per the referenced source, the plugin's extended shortcodes implementation (extensions/ifso-extended-shortcodes/extended-shortcodes.php, lines 258 and 267 of the 1.10.2 tag) takes the 'conversion' attribute supplied inside the shortcode and fails to sanitize it on input and to escape it on output, so attacker-controlled markup is persisted in post content and rendered unescaped. Because the payload is stored rather than reflected, it is served to every subsequent visitor of the affected page, which is why the CVSS vector scores S:C (scope change: the script executes in the context of the site and its other users, not just the vulnerable component) alongside AV:N/AC:L/PR:L/UI:N. The trigger is specifically shortcode attribute processing; the supplied evidence does not describe any additional race, memory-corruption, or non-standard configuration condition.

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Severity by source

Vendor (Wordfence) PRIMARY 6.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
vuln.today AI 6.4 MEDIUM

Contributor authentication sets PR:L; stored script executes in other users' browser context giving S:C with limited C:L/I:L and no availability impact.

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

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

The If-So Dynamic Content - Elementor & All Page Builders Personalization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'conversion' Shortcode Attribute in all versions up to, and including, 1.10.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Prevalence
Medium
WordPress personalization/page-builder plugin with a moderate install base
Social Media
1
Sightings
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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