CVE-2025-48352 in Yandex Site Search Pinger Plugin
Summary
by MITRE • 08/28/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in sitesearch-yandex Yandex Site search pinger allows Stored XSS. This issue affects Yandex Site search pinger: from n/a through 1.5.
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Analysis
by VulDB Data Team • 05/19/2026
This cross-site scripting vulnerability exists within the Yandex Site search pinger component of the sitesearch-yandex library, representing a classic stored XSS flaw that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability stems from inadequate input sanitization during web page generation processes, where user-supplied data is not properly escaped or validated before being rendered in HTML contexts. This weakness enables attackers to persist malicious JavaScript code within the application's data storage, which then executes whenever other users access the affected pages, creating a persistent security threat that can compromise user sessions and data.
The technical implementation of this vulnerability allows for stored XSS attacks because the pinger component fails to neutralize input data appropriately during the web page generation phase. When users interact with the search functionality, their input is stored in the system without proper sanitization measures, creating an environment where malicious payloads can be executed in the context of other users' browsers. This flaw specifically affects versions from n/a through 1.5, indicating a widespread issue across multiple releases of the library. The vulnerability maps directly to CWE-79 which defines the improper neutralization of input during web page generation as a primary weakness category for cross-site scripting attacks.
From an operational impact perspective, this vulnerability presents significant risks to organizations using the Yandex Site search pinger component, as it can lead to session hijacking, credential theft, and data exfiltration from authenticated users. Attackers can exploit this weakness to execute arbitrary code in victims' browsers, potentially gaining access to sensitive information, modifying web page content, or redirecting users to malicious sites. The stored nature of this XSS vulnerability means that the malicious code persists in the system and affects multiple users over time, unlike reflected XSS which requires user interaction with a specific malicious link. This makes the attack surface more extensive and the impact more severe, as the vulnerability can be leveraged to compromise user accounts and system integrity.
Organizations should immediately implement mitigations including input validation and output encoding measures to prevent the persistence of malicious scripts within the application. The recommended approach involves implementing proper HTML escaping for all user-supplied data before rendering in web contexts, utilizing Content Security Policy headers to limit script execution, and conducting regular security assessments of third-party components. Additionally, organizations should consider implementing web application firewalls to detect and block suspicious input patterns, and establish secure coding practices that align with OWASP Top Ten recommendations for preventing XSS vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1566 - Phishing, as it can be exploited to deliver malicious payloads through compromised web interfaces, making it essential for security teams to monitor and remediate such weaknesses promptly.