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Realtyna Organic IDX CVE-2026-91014

| EUVDEUVD-2026-81355 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-09-17 WPScan GHSA-qm73-3q75-wf7w
7.1
CVSS 3.1 · Vendor: WPScan
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Attack ChainAIDerived

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

  1. Access
    Craft URL with malicious script in vulnerable parameter
  2. Delivery
    Deliver crafted link to victim via phishing
  3. Exploit
    Victim clicks and page reflects payload unescaped
  4. Execution
    Script executes in victim browser session
  5. Impact
    Steal session cookies or perform actions as victim

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 unauthenticated attacker to craft a link containing a malicious payload in one of the plugin's unsanitised parameters AND to socially engineer a victim (visitor or administrator) into clicking it - the reflected payload only executes in the browser of a user who follows the crafted link (UI:R). Limiting factors: no exploitation occurs without victim interaction; impact is scoped to the victim's browser session rather than the server; and exposure is gated to sites running the Realtyna Organic IDX + WPL Real Estate plugin before version 5.4.2. Impact is amplified if the tricked victim is an authenticated administrator.

Impact

This is a real but moderate-priority issue best characterized as a standard reflected XSS in a niche WordPress plugin. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, 7.1) indicates network-reachable, low-complexity, unauthenticated exploitation, but the UI:R flag is decisive: exploitation requires tricking a visitor into following an attacker-crafted link, which meaningfully reduces reliability versus a self-triggering flaw. A public POC exists (WPScan), raising the practical likelihood that scanners and opportunistic actors can weaponize it, but there is NO KEV listing and NO EPSS score in the provided data, so there is no evidence of active or widespread exploitation - POC availability and active exploitation are distinct signals here. The scope-change (S:C) and the I:L/A:L impacts are generous for a reflected XSS; realistic impact is confidentiality/integrity of the victim's browser session (cookie/token theft, DOM manipulation), so the 7.1 slightly overstates severity - a conventional reflected-XSS profile lands closer to 6.1. Net: patch it, but it is not a drop-everything emergency absent evidence of targeting.

Exploit ScenarioDerived

An attacker crafts a URL to the affected plugin's page containing a malicious payload in an unsanitised parameter, then delivers it via phishing email, forum post, or malicious ad. When a logged-in site visitor or administrator clicks the link, the reflected script executes in their browser context, enabling session-cookie theft, CSRF-style actions, or credential harvesting. A public POC is available from WPScan, lowering the skill barrier to reproduce the attack.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 17, 2026

Reflected cross-site scripting in the Realtyna Organic IDX plugin + WPL Real Estate WordPress plugin before version 5.4.2 allows an unauthenticated attacker to inject arbitrary script into a page that is echoed back to the victim's browser, enabling session theft, credential harvesting, or malicious redirects in the context of the targeted site. Exploitation is not autonomous: the attacker must craft a link containing the payload in one of the plugin's unsanitised parameters and socially engineer a visitor - or an authenticated administrator, which materially raises the stakes - into following it, so the assessed vector requires user interaction (UI:R) and impact is confined to the victim's browser session rather than the server. Publicly available exploit code exists per the WPScan report, but there is no KEV listing indicating confirmed active exploitation; the issue is a real but moderate-priority reflected XSS in a niche WordPress plugin, with a vendor-released fix at version 5.4.2.

RemediationAI

Upgrade the Realtyna Organic IDX plugin + WPL Real Estate to version 5.4.2 or later, which is the vendor-released fix; the patch is available from the vendor and the WPScan advisory at https://wpscan.com/vulnerability/a57a9fbd-6f77-463f-a9fa-79503c12a49c/ documents the corrected release. If an immediate update is not possible, the only reliable compensating control is to deactivate the plugin until it can be patched - its IDX/real-estate front-end functionality is what exposes the unauthenticated reflection surface, so no partial disabling of just the vulnerable parameter is documented and the trade-off is loss of listing/search functionality on the site. A WAF rule that inspects query strings for script markup and known XSS payload patterns on requests to the plugin's front-end endpoints can blunt opportunistic exploitation, but it is bypassable by encoding tricks and must not be treated as a substitute for patching. Because exploitation requires a victim to follow a crafted link, reducing the window of exposure also means limiting administrative browsing to trusted URLs while the plugin remains unpatched, since a tricked authenticated administrator yields the highest-impact outcome (script execution in an admin session).

Affected VersionsENISA

Realtyna Organic IDX plugin + WPL Real Estate 0 <5.4.2

Affected Packages

euvd realtyna_organic_idx_plugin_wpl_real_estate fix: 5.4.2

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 root cause is CWE-79 (Improper Neutralisation of Input During Web Page Generation), specifically the reflected XSS sub-class: the plugin takes request parameters, reflects them back into the generated HTML without output encoding or sanitisation, and therefore a browser parsing the response executes attacker-supplied markup as script. Reflected XSS differs from stored XSS in that the payload lives only in the crafted request/link and is never persisted server-side, which bounds the blast radius to users who click the malicious URL but also makes mass exploitation dependent on phishing or link-distribution campaigns. The plugin is a WordPress extension combining Organic IDX and WPL Real Estate functionality - IDX/real-estate listing display components that expose front-end search and query parameters to unauthenticated visitors, which is precisely the surface where unsanitised reflection is reachable without authentication. The supplied CPE (cpe:2.3:a:unknown:realtyna_organic_idx_plugin_+_wpl_real_estate:*:*:*:*:*:*:*:*) is a wildcarded, vendor-unknown entry, so exact build-level mapping must be derived from the version range in the ENISA EUVD record rather than from CPE version fields; the CVSS vector confirms PR:N (no privileges required to deliver the request) combined with UI:R (a victim must be induced to click), and the scope change (S:C) reflects that script executes in the browser security context rather than that of the vulnerable component.

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Severity by source

Vendor (WPScan) PRIMARY 7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 6.1 MEDIUM

Unauthenticated reflected XSS requiring victim to click a link (UI:R) with scope change into the browser (S:C); C:L/I:L reflect session/DOM impact and A:N as XSS does not degrade availability.

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

Primary rating from Vendor (WPScan).

CVSS VectorVendor: WPScan

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

Lifecycle Timeline

4
CVSS changed
Sep 17, 2026 - 13:22 NVD
7.1 (HIGH)
Patch available
Sep 17, 2026 - 07:00 EUVD
CVE Published
Sep 17, 2026 - 06:00 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 17, 2026 - 06:00 cve.org
HIGH 7.1

DescriptionCVE.org

The Realtyna Organic IDX plugin + WPL Real Estate WordPress plugin before 5.4.2 does not sanitise and escape some of its parameters before reflecting them back in the page, allowing unauthenticated attackers to run arbitrary web scripts in a visitor's browser if they can trick the visitor into following a crafted link (reflected XSS).

Technical POC Analysis

Evidence base: the WPScan record only (title, description, affected plugin slug, fixed version, CVSS, CWE, researcher credit, embargo date).

Full technical POC analysis - root cause, step-by-step exploitation and patch breakdown - is part of the Pro and Business plans.

Executive ViewAI

Why It Matters

The Realtyna Organic IDX plugin and WPL Real Estate WordPress plugin before version 5.4.2 contain a reflected cross-site scripting flaw that can compromise visitors' or administrators' browser sessions on affected real estate websites. Publicly available exploit code exists, but there is no CISA KEV listing indicating confirmed active exploitation. Because successful exploitation could lead to credential theft, session hijacking, or malicious redirects, leadership should ensure timely patching and user awareness for any sites using this plugin.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Low
niche industry-specific real-estate IDX/MLS WordPress plugin
Exploit
POC
Public exploit code exists
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 Yes
EPSS 0.2%
Patch available Yes
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
High
Technical Impact
Partial

Priority Score

56
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: +20
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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