What is the CVSS score of CVE-2026-105877?

CVE-2026-105877 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.3%.

QA Analytics CVE-2026-105877

EUVD-2026-95771 MEDIUM

Insertion of Sensitive Information Into Sent Data (CWE-201)

2026-10-09 Patchstack

GHSA-h86h-v9f3-5qp7

WordPress Information Disclosure Qa Analytics Wordpress Plugin

6.9

CVSS 4.0 · Vendor: Patchstack

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Attack ChainAIDerived

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

Access

Identify site running QA Analytics plugin
Exploit

Send request to exposed plugin endpoint
Execution

Receive response containing embedded sensitive data
Impact

Harvest disclosed information

Vulnerability Assessment

Weakness	CWE CWE-201 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V14 - Data Protection Outbound data filtering
Exploitation Conditions	Requires a WordPress site running the QA Analytics (qa-heatmap-analytics) plugin at version 5.3.0.0 or earlier with the heatmap/analytics data-collection feature active, which embeds sensitive information into data sent to clients. Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), no authentication, user interaction, or special attacker position is required against a default-configured vulnerable installation. The primary limiting factors are that the target must have this specific plugin installed and that impact is confined to LOW-sensitivity data disclosure (VC:L) with no integrity or availability effect.
Impact	This is a medium-severity information disclosure flaw (CVSS 4.0 base 6.9, CWE-201) in the QA Analytics WordPress plugin. The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N) indicates a network-reachable, low-complexity, unauthenticated issue with only LOW confidentiality impact and no integrity or availability impact - meaning it leaks embedded sensitive data rather than granting system compromise. No EPSS score, CISA KEV listing, or public POC was provided in the source data, so there is no public exploit identified at time of analysis. The signals are internally consistent: a genuinely remote/unauthenticated issue but with limited (confidentiality-only, LOW) impact, so this is a real-but-modest priority rather than a critical emergency. The absence of KEV/EPSS/POC signals means exploitation likelihood cannot be quantified from the input and should be treated as unknown rather than low. Sourced solely from Patchstack via a single reference; no independent vendor advisory was supplied.
Exploit ScenarioDerived	A remote unauthenticated attacker interacts with a WordPress site running QA Analytics (qa-heatmap-analytics) ≤ 5.3.0.0 and retrieves embedded sensitive data that the plugin inadvertently inserts into data it sends to clients. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N, no credentials or user interaction are needed, though impact is limited to disclosure of low-sensitivity information. No public exploit code was identified in the provided data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 09, 2026

Sensitive information disclosure in QA Analytics WordPress plugin versions through 5.3.0.0 allows unauthenticated remote attackers to retrieve embedded sensitive data sent to clients. This medium-severity flaw (CVSS 4.0 6.9, CWE-201) affects sites with the plugin's heatmap/analytics data-collection feature active, and no public exploit has been identified at time of analysis.

RemediationAI

No vendor-released patch identified at time of analysis. Monitor the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/qa-heatmap-analytics/vulnerability/wordpress-qa-analytics-plugin-5-3-0-0-sensitive-data-exposure-vulnerability?_s_id=cve) for updates. As a compensating control, disable the heatmap/analytics data-collection feature within the QA Analytics plugin settings if possible; this prevents sensitive information from being embedded in client responses but disables analytics functionality. Alternatively, remove the plugin entirely if analytics are not essential. Restricting access to the plugin's endpoints via web application firewall or server configuration may reduce exposure but does not eliminate the underlying flaw and could disrupt legitimate analytics collection.

Affected VersionsENISA

QA Analytics 0 ≤5.3.0.0

Affected Packages

euvd qa_analytics 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 an instance of CWE-201 (Insertion of Sensitive Information Into Sent Data), where the QA Analytics plugin for WordPress embeds sensitive information into data sent to clients-likely via JavaScript files, API responses, or HTML output used for heatmap and analytics collection. The CPE cpe:2.3:a:quarka:qa_analytics:*:*:*:*:*:*:*:* identifies the affected component as all versions of QuarkA's QA Analytics up to and including 5.3.0.0. This class of flaw occurs when an application includes sensitive data in outbound communications without proper filtering, allowing an attacker to simply inspect the client-side data to extract secrets. The plugin's data-collection feature actively transmits analytics data to the browser, which should be sanitized but instead exposes embedded sensitive information.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 6.9 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

vuln.today AI 5.3 MEDIUM

Remote unauthenticated data exposure with no user interaction (AV:N/AC:L/PR:N/UI:N); only limited confidentiality impact (C:L) and no integrity or availability effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

Vulnerable system: Confidentiality

Low

Vulnerable system: Integrity

None

Vulnerable system: Availability

None

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

DescriptionCVE.org

Insertion of Sensitive Information Into Sent Data vulnerability in QuarkA QA Analytics qa-heatmap-analytics allows Retrieve Embedded Sensitive Data.This issue affects QA Analytics: from n/a through 5.3.0.0.

Threat Intelligence Overview

EPSS Score

0.3%

Top 85% exploitable

Prevalence

Low

niche WordPress heatmap analytics plugin, limited deployment footprint

Data Quality

4 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

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 0.3%

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

Yes

Human Impact· derived

Medium

Technical Impact

Partial

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +34

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.