Cyber Resilience

CVE-2025-23507

High

Published: 22 January 2025

Published
22 January 2025
Modified
23 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 0.0010 27.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-23507 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 27.4th 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-2025-23507 is an Improper Neutralization of Input During Web Page Generation vulnerability, enabling Reflected Cross-site Scripting (XSS) as classified under CWE-79. It affects the Blrt WP Embed WordPress plugin (blrt-wp-embed), impacting all versions from n/a through 1.6.9 inclusive. The issue was published on 2025-01-22.

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), indicating network accessibility, low attack complexity, no required privileges, but user interaction such as visiting a malicious link. Remote attackers can exploit it to inject and execute arbitrary scripts in a victim's browser context, achieving low impacts on confidentiality, integrity, and availability with a changed scope.

Mitigation guidance is available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/blrt-wp-embed/vulnerability/wordpress-blrt-wp-embed-plugin-1-6-9-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 Blrt Blrt WP Embed blrt-wp-embed allows Reflected XSS.This issue affects Blrt WP Embed: from n/a through <= 1.6.9.

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 →
Why these techniques?

Reflected XSS in public-facing WordPress plugin directly enables exploitation of public-facing web applications to inject/execute arbitrary scripts in victim browsers.

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

CVEs Like This One

CVE-2021-47873Shared CWE-79
CVE-2026-7052Shared CWE-79
CVE-2024-56060Shared CWE-79
CVE-2025-49043Shared CWE-79
CVE-2026-40038Shared CWE-79
CVE-2024-56022Shared CWE-79
CVE-2025-68889Shared CWE-79
CVE-2026-1074Shared CWE-79
CVE-2025-22539Shared CWE-79
CVE-2025-22286Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-15 Information Output Filtering good match
prevent

SI-15 directly prevents reflected XSS by filtering output prior to inclusion in web pages, addressing the improper neutralization of input during web page generation.

SI-10 Information Input Validation good match
prevent

SI-10 enforces input validation at system entry points to block malicious scripts from being accepted and reflected in the WordPress plugin response.

SI-2 Flaw Remediation good match
prevent

SI-2 ensures timely flaw remediation by patching the vulnerable Blrt WP Embed plugin versions up to 1.6.9.

References