Cyber Resilience

CVE-2026-27363

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
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Patch
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CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0004 14.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-27363 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 14.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).

Deeper analysis

CVE-2026-27363 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Stored Cross-site Scripting (XSS) under CWE-79, in the WP Bakery Autoresponder Addon (vc-autoresponder-addon) by kamleshyadav. This issue affects the plugin from unknown initial versions through 1.0.6 and was published on 2026-03-05.

The vulnerability carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L). Unauthenticated attackers accessible over the network can exploit it with low complexity by injecting malicious payloads into stored content. Exploitation requires user interaction, such as a victim viewing the affected page, after which the payload executes in a changed scope, enabling low-level impacts on confidentiality, integrity, and availability, such as script execution in the victim's browser context.

Patchstack documents the vulnerability for the WordPress plugin vc-autoresponder-addon version 1.0.6 at https://patchstack.com/database/Wordpress/Plugin/vc-autoresponder-addon/vulnerability/wordpress-wp-bakery-autoresponder-addon-plugin-1-0-6-cross-site-scripting-xss-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in kamleshyadav WP Bakery Autoresponder Addon vc-autoresponder-addon allows Stored XSS.This issue affects WP Bakery Autoresponder Addon: from n/a through <= 1.0.6.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
Why these techniques?

Stored XSS in public-facing WordPress plugin directly enables exploitation via T1190; script execution in victim browser context facilitates T1185 (explicitly notes XSS) and T1539 (stealing cookies via injected scripts).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2018-25248Shared CWE-79
CVE-2025-68008Shared CWE-79
CVE-2025-0817Shared CWE-79
CVE-2024-55227Shared CWE-79
CVE-2026-2072Shared CWE-79
CVE-2026-32728Shared CWE-79
CVE-2025-25169Shared CWE-79
CVE-2025-68887Shared CWE-79
CVE-2026-21290Shared CWE-79
CVE-2024-41746Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation and neutralization of untrusted input before storage and web page generation, blocking the stored XSS payload injection described in the CVE.

SI-15 Information Output Filtering good match
prevent

Requires filtering of information outputs to remove or encode potentially malicious script content before it reaches the victim's browser, mitigating the stored XSS execution path.

SI-3 Malicious Code Protection partial match
preventdetect

Provides mechanisms to detect and block malicious code (including injected scripts) at system or boundary points, offering secondary protection against the unauthenticated network-based XSS payload.

References