CVE-2025-23175: Multiple XSS Vulnerability Disclosed

CVE-2025-23175 Overview

CVE-2025-23175 is a Cross-Site Scripting (XSS) vulnerability tracked under CWE-79. The issue involves multiple XSS injection points that allow attackers to inject malicious script content into web application responses. Successful exploitation requires user interaction, such as clicking a crafted link or visiting a malicious page. The vulnerability was published to the National Vulnerability Database on April 22, 2025, and is documented in the Israeli Government CVE Advisories.

Critical Impact
Attackers can execute arbitrary JavaScript in the victim's browser session, enabling session hijacking, credential theft, and defacement of trusted content.

Affected Products

Affected vendor: Not Available in published NVD data
Affected product: Not Available in published NVD data
Affected versions: Not Available in published NVD data

Discovery Timeline

2025-04-22 - CVE-2025-23175 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-23175

Vulnerability Analysis

CVE-2025-23175 covers multiple Cross-Site Scripting (XSS) flaws classified under [CWE-79]. The application fails to properly neutralize user-supplied input before returning it in generated web pages. When a victim loads a page containing attacker-controlled content, the browser executes the injected script in the origin of the vulnerable site.

The attack requires user interaction, typically through a crafted URL or form submission. The scope change indicates that the injected code can impact resources beyond the vulnerable component, such as parent frames or other same-origin contexts. Confidentiality and integrity impact are limited but non-zero, consistent with script-based data theft and content manipulation.

The EPSS score of 0.214% places exploitation probability in the lower percentile range. However, XSS remains one of the most consistently exploited web weaknesses in enterprise environments.

Root Cause

The root cause is missing or insufficient output encoding when reflecting user-controlled data into HTML, JavaScript, or attribute contexts. Input sanitization routines either do not exist or fail to strip active content constructs such as <script> tags, event handlers like onerror, or javascript: URIs.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker crafts a malicious payload embedded in a URL parameter, form field, or stored record. The victim triggers execution by visiting the crafted link or viewing content that renders the tainted data. The injected script then runs with the privileges of the victim's session against the vulnerable origin.

Refer to the Israeli Government CVE Advisories for advisory-specific technical details.

Detection Methods for CVE-2025-23175

Indicators of Compromise

Web server access logs containing <script>, onerror=, onload=, or javascript: strings inside query parameters or POST bodies.
Unexpected outbound requests from user browsers to attacker-controlled domains following interaction with the affected application.
HTML responses reflecting unescaped user input into the DOM or attribute contexts.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect requests for common XSS payload patterns and encoded variants.
Implement Content Security Policy (CSP) violation reporting to capture attempts to load inline or third-party scripts.
Correlate suspicious URL parameters against user session activity in SIEM platforms to identify targeted phishing campaigns.

Monitoring Recommendations

Monitor authentication events and session token usage for anomalies immediately following user clicks on external links.
Alert on repeated 4xx/5xx responses containing script-like payloads, which often indicate payload fuzzing.
Review browser telemetry and endpoint logs for script execution originating from the affected web origin.

How to Mitigate CVE-2025-23175

Immediate Actions Required

Apply the vendor security update once identified through the Israeli Government CVE Advisories listing.
Enforce output encoding for all user-controllable data reflected in HTML, JavaScript, or attribute contexts.
Deploy a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.

Patch Information

Vendor patch details are not published in the current NVD record. Administrators should consult the Israeli Government CVE Advisories for the referenced advisory associated with CVE-2025-23175 and apply the corresponding fix once identified.

Workarounds

Configure a strict Content-Security-Policy header disallowing unsafe-inline and restricting script sources.
Set the HttpOnly and Secure flags on session cookies to limit script access to authentication tokens.
Add WAF signatures for reflected XSS payload patterns targeting the affected application endpoints.
Educate users to avoid clicking untrusted links referencing the affected application until patched.

bash

# Example hardening headers for reverse proxy or web server
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'";
add_header X-Content-Type-Options "nosniff";
add_header X-Frame-Options "SAMEORIGIN";
add_header Referrer-Policy "strict-origin-when-cross-origin";