CVE-2022-50967: uBidAuction XSS Vulnerability

CVE-2022-50967 Overview

CVE-2022-50967 is a reflected cross-site scripting (XSS) vulnerability in uBidAuction 2.0.1, a PHP-based auction script distributed through AppHP. The flaw resides in the tickets/manage module, where the date_created, date_from, date_to, and created_at filter parameters are reflected into HTTP responses without proper sanitization. Remote attackers can craft malicious GET requests that execute arbitrary JavaScript in a victim's browser when the link is visited. The issue is tracked under CWE-79 (Improper Neutralization of Input During Web Page Generation).

Critical Impact
Successful exploitation enables session hijacking, credential theft, and unauthorized actions performed in the context of an authenticated auction site user.

Affected Products

uBidAuction 2.0.1 (AppHP)
The tickets/manage module filter functionality
Deployments exposing the vulnerable parameters to untrusted users

Discovery Timeline

2026-05-10 - CVE-2022-50967 published to NVD
2026-05-12 - Last updated in NVD database

Technical Details for CVE-2022-50967

Vulnerability Analysis

The vulnerability is a classic reflected XSS in the ticket management interface of uBidAuction 2.0.1. The tickets/manage endpoint accepts user-controlled filter parameters via HTTP GET and reflects their values into the rendered HTML without escaping or contextual encoding. When an attacker supplies JavaScript payloads inside date_created, date_from, date_to, or created_at, the markup is parsed and executed by the victim's browser. Exploitation requires user interaction, typically achieved by sending a crafted URL through email, chat, or a malicious third-party page.

Root Cause

The root cause is missing output encoding and missing input validation for date-formatted parameters. The application trusts that filter values conform to a date pattern and concatenates them into HTML or JavaScript contexts without applying functions such as htmlspecialchars() or strict type validation. This allows arbitrary HTML and script content to be injected into the response.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker crafts a URL targeting the tickets/manage module with a script payload in one of the vulnerable filter parameters. When an authenticated administrator or operator clicks the link, the payload executes in their browser session and can read cookies (when not flagged HttpOnly), manipulate the DOM, perform actions on behalf of the user, or pivot to other application functionality. Public exploitation details are documented in Exploit-DB #50693 and the Vulnerability Lab Report #2289.

The vulnerability manifests when the affected filter parameters are echoed back into the response. See the VulnCheck Security Advisory for parameter-level technical details.

Detection Methods for CVE-2022-50967

Indicators of Compromise

Web server access logs containing tickets/manage requests with <, >, script, onerror, or URL-encoded equivalents (%3C, %3E) inside date_created, date_from, date_to, or created_at parameters.
Outbound browser requests to attacker-controlled domains originating from administrator sessions immediately after visiting a uBidAuction URL.
Unexpected administrative actions performed from legitimate user sessions following a phishing event.

Detection Strategies

Deploy web application firewall (WAF) rules to flag HTML/JavaScript metacharacters in date-formatted query parameters.
Inspect HTTP referrers and query strings for non-date values reaching the tickets/manage endpoint.
Correlate phishing email telemetry with subsequent visits to uBidAuction administrative pages.

Monitoring Recommendations

Enable verbose HTTP logging on the auction application and forward logs to a centralized analytics platform for query-string analysis.
Monitor Content Security Policy (CSP) violation reports if CSP is enforced; spikes in script-src violations indicate active probing.
Track session anomalies such as new IP addresses or user agents using existing administrator session cookies.

How to Mitigate CVE-2022-50967

Immediate Actions Required

Restrict access to the tickets/manage interface to trusted internal networks or via VPN until a patched build is available.
Apply input validation at a reverse proxy or WAF that enforces a strict YYYY-MM-DD regular expression for the affected parameters.
Educate administrators to avoid clicking unsolicited links targeting the auction application.

Patch Information

No vendor patch is referenced in the NVD entry at the time of publication. Operators should consult the AppHP product page for updated releases and apply server-side sanitization using htmlspecialchars($value, ENT_QUOTES, 'UTF-8') for all reflected parameters in tickets/manage.

Workarounds

Enforce a Content Security Policy that disallows inline scripts and restricts script-src to trusted origins.
Set session cookies with HttpOnly, Secure, and SameSite=Strict attributes to limit the impact of script execution.
Add WAF signatures that block HTML tags and JavaScript event handlers in the four vulnerable parameters.

bash

# Example ModSecurity rule to block script payloads in vulnerable parameters
SecRule ARGS:date_created|ARGS:date_from|ARGS:date_to|ARGS:created_at \
  "@rx (?i)(<script|onerror=|onload=|javascript:|%3Cscript)" \
  "id:1009671,phase:2,deny,status:403,log,\
   msg:'CVE-2022-50967 uBidAuction XSS attempt blocked'"