CVE-2025-23837

WordPress One Backend Language Plugin <= 1.0 - Reflected Cross Site Scripting (XSS) vulnerability

Published Jan 24, 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 martinjuhasz One Backend Language one-backend-language allows Reflected XSS.This issue affects One Backend Language: from n/a through <= 1.0.

Analysis

Technical impact

An input validation flaw in the WordPress One Backend Language plugin causes user supplied data to be incorporated into web pages without proper encoding. This reflected cross‑site scripting vulnerability, classified as CWE‑79, allows an attacker to embed malicious scripts that will execute in the browsers of anyone who visits a crafted URL. The consequences include theft of session cookies, defacement of web pages, and the ability to redirect users to phishing sites.

Affected Systems

The flaw is present in the One Backend Language plug‑in developed by Martijn Juhasz, affecting version 1.0 and all earlier releases that are deployed on WordPress sites. Any site that has this plug‑in installed is susceptible to the reflected XSS attack.

Risk and Exploitability

The flaw carries a CVSS score of 7.1, indicating a moderate level of severity. With an EPSS score below 1%, the likelihood of exploitation in the wild is low, and the vulnerability is not listed in the CISA KEV catalog. Attackers can exploit it by directing users to a crafted link that includes malicious input; no authentication or privileged access is required. The vulnerability can lead to full control of the victim’s browser session.

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

martinjuhasz

One Backend Language

unaffected

Version	Status	Constraints
`0`	affected	≤ 1.0

No data.

Vendor	Product	Versions
Wordpress	Wordpress	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade the One Backend Language plug‑in to a version newer than 1.0 to remove the vulnerability.
If an upgrade is not immediately possible, disable or uninstall the plug‑in from the WordPress installation.
Deploy a web application firewall rule that blocks or sanitizes reflected XSS payloads targeting the plug‑in’s endpoints.

Generated by OpenCVE AI on May 1, 2026 at 19:04 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-3466	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound One Backend Language allows Reflected XSS. This issue affects One Backend Language: from n/a through 1.0.

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% (0.238% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/Wordpress/Plugin/one-backend-language/vulnerability/wordpress-one-backend-language-plugin-1-0-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 One Backend Language allows Reflected XSS. This issue affects One Backend Language: from n/a through 1.0.	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in martinjuhasz One Backend Language one-backend-language allows Reflected XSS.This issue affects One Backend Language: from n/a through <= 1.0.
References	https://patchstack.com/database/wordpress/plugin/one-backend-language/vulnerability/wordpress-one-backend-language-plugin-1-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve	https://patchstack.com/database/Wordpress/Plugin/one-backend-language/vulnerability/wordpress-one-backend-language-plugin-1-0-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'}`

Jan 27, 2025 4:15 PM Scoring metrics updated View changes

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

Jan 24, 2025 11:00 AM 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 One Backend Language allows Reflected XSS. This issue affects One Backend Language: from n/a through 1.0.
Title		WordPress One Backend Language Plugin <= 1.0 - Reflected Cross Site Scripting (XSS) vulnerability
Weaknesses		CWE-79
References		https://patchstack.com/database/wordpress/plugin/one-backend-language/vulnerability/wordpress-one-backend-language-plugin-1-0-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'}`