Cyber Resilience

CVE-2026-27385

High

Published: 05 March 2026

Published
05 March 2026
Modified
22 April 2026
KEV Added
—
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-2026-27385 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-2026-27385 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the DesignThemes Portfolio WordPress plugin (designthemes-portfolio). The issue impacts all versions from n/a through 1.3 inclusive, as published on 2026-03-05.

With 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 can exploit this over the network with low attack complexity by tricking users into performing actions such as clicking malicious links containing reflected XSS payloads. Exploitation executes arbitrary scripts in the victim's browser within the site's context, enabling low-level impacts on confidentiality, integrity, and availability due to the changed scope.

Mitigation details are available in advisories such as the Patchstack database entry: https://patchstack.com/database/Wordpress/Plugin/designthemes-portfolio/vulnerability/wordpress-designthemes-portfolio-plugin-1-3-reflected-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 designthemes DesignThemes Portfolio designthemes-portfolio allows Reflected XSS.This issue affects DesignThemes Portfolio: from n/a through <= 1.3.

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 →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
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?

Reflected XSS in public-facing WordPress plugin directly enables arbitrary JS execution in victim browser context via malicious links (T1190 public app exploitation + T1059.007 JavaScript interpreter), facilitating session hijacking (T1185) and cookie theft (T1539).

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

CVEs Like This One

CVE-2025-67949Shared CWE-79
CVE-2024-56033Shared CWE-79
CVE-2025-23549Shared CWE-79
CVE-2026-27072Shared CWE-79
CVE-2026-27068Shared CWE-79
CVE-2025-59542Shared CWE-79
CVE-2025-26989Shared CWE-79
CVE-2026-28103Shared CWE-79
CVE-2026-26266Shared CWE-79
CVE-2025-23838Shared 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 it is used in web page generation, blocking the reflected XSS payloads 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, preventing the reflected XSS from executing in the victim's browser.

SI-3 Malicious Code Protection partial match
preventdetect

Provides mechanisms to detect and block malicious code (including script payloads) delivered via network inputs or links that exploit the plugin vulnerability.

References