CVE-2025-27269

WordPress .htaccess Login block Plugin <= 0.9a - Reflected Cross Site Scripting (XSS) vulnerability

Published Mar 3, 2025 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Anton Aleksandrov .htaccess Login block htaccess-login-block allows Reflected XSS.This issue affects .htaccess Login block: from n/a through <= 0.9a.

Analysis

Technical impact

The .htaccess Login block plugin contains an improper neutralization of input during web page generation vulnerability that permits attackers to inject and execute arbitrary JavaScript when a user visits certain URLs. This reflected Cross‑Site Scripting flaw is categorized under CWE‑79, enabling attackers to hijack user sessions, deface the site, or perform other client‑side attacks whenever an affected user clicks a malicious link or submits a crafted request.

Affected Systems

WordPress sites that use the Anton Aleksandrov .htaccess Login block plugin, versions 0.9a and earlier.

Risk and Exploitability

With a CVSS score of 7.1 the vulnerability is considered high severity. The EPSS score of less than 1% indicates a low probability of exploitation at present, and the vulnerability is not listed in the CISA KEV catalog. The likely attack scenario requires a vulnerable user to interact with a crafted URL; no authentication or elevated privileges are needed for exploitation.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Anton Aleksandrov

.htaccess Login block

unaffected

Version	Status	Constraints
`0`	affected	≤ 0.9a

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade the .htaccess Login block plugin to a version newer than 0.9a or uninstall the plugin if it is not essential.
Ensure the WordPress core and all remaining plugins are updated to their latest secure versions.
Deploy application‑layer defenses, such as a web application firewall rule or a security plugin, to filter or block reflected XSS payloads targeting the login page.

Generated by OpenCVE AI on May 1, 2026 at 14:17 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-5600	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound .htaccess Login block allows Reflected XSS. This issue affects .htaccess Login block: from n/a through 0.9a.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.318% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/Wordpress/Plugin/htaccess-login-block/vulnerability/wordpress-htaccess-login-block-plugin-0-9a-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

History

Apr 23, 2026 3:00 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`

Apr 1, 2026 11:45 PM Description updated. References updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound .htaccess Login block allows Reflected XSS. This issue affects .htaccess Login block: from n/a through 0.9a.	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Anton Aleksandrov .htaccess Login block htaccess-login-block allows Reflected XSS.This issue affects .htaccess Login block: from n/a through <= 0.9a.
References	https://patchstack.com/database/wordpress/plugin/htaccess-login-block/vulnerability/wordpress-htaccess-login-block-plugin-0-9a-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve	https://patchstack.com/database/Wordpress/Plugin/htaccess-login-block/vulnerability/wordpress-htaccess-login-block-plugin-0-9a-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
Metrics	cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`

Mar 4, 2025 3:45 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mar 3, 2025 1:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound .htaccess Login block allows Reflected XSS. This issue affects .htaccess Login block: from n/a through 0.9a.
Title		WordPress .htaccess Login block Plugin <= 0.9a - Reflected Cross Site Scripting (XSS) vulnerability
Weaknesses		CWE-79
References		https://patchstack.com/database/wordpress/plugin/htaccess-login-block/vulnerability/wordpress-htaccess-login-block-plugin-0-9a-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`