CVE-2026-14219: HUMANIST Open Redirect Vulnerability

CVE-2026-14219 Overview

CVE-2026-14219 is an open redirect vulnerability [CWE-601] in Bilin Software and Informatics Consultancy Inc. HUMANIST Digital Human Resources. The flaw affects versions from 26.0 before 26.1. Attackers can craft URLs that appear to originate from the trusted HUMANIST domain but redirect victims to attacker-controlled destinations. This behavior enables phishing campaigns that leverage the trust users place in the human resources platform. The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N indicates a network-exploitable issue that requires low privileges and user interaction, with a scope change resulting from the redirection to an untrusted origin.

Critical Impact
Attackers can weaponize trusted HUMANIST HR URLs to redirect employees to phishing pages that harvest credentials or deliver malware.

Affected Products

Bilin Software and Informatics Consultancy Inc. HUMANIST Digital Human Resources 26.0
Bilin Software and Informatics Consultancy Inc. HUMANIST Digital Human Resources versions prior to 26.1
HR portal deployments exposing redirect parameters to authenticated users

Discovery Timeline

2026-08-04 - CVE-2026-14219 published to NVD
2026-08-04 - Last updated in NVD database

Technical Details for CVE-2026-14219

Vulnerability Analysis

The vulnerability is classified as URL Redirection to Untrusted Site, commonly known as an open redirect. HUMANIST Digital Human Resources accepts a redirect target as user-controlled input and forwards the browser to that destination without validating whether the target belongs to an allow-listed domain. Because the initiating URL points to the legitimate HUMANIST host, victims and email security tools observe a trusted origin before the browser follows the redirect.

Exploitation requires an authenticated session with low privileges and user interaction, such as clicking a crafted link. The scope change reflected in the CVSS vector indicates that the impact extends beyond the vulnerable HUMANIST application into the security domain of the redirected destination. Confidentiality and integrity impacts are rated low, and there is no direct availability impact.

Root Cause

The root cause is missing or insufficient validation of the redirect target parameter within the HUMANIST HR web application. The application trusts client-supplied URLs and issues an HTTP redirect response without enforcing a scheme, host allow list, or relative-path constraint. This design flaw is captured under CWE-601.

Attack Vector

An attacker with a valid low-privilege HUMANIST account crafts a URL on the legitimate HUMANIST domain that embeds an attacker-controlled destination in a redirect parameter. The attacker delivers this URL through email, chat, or social channels. When a victim clicks the link and authenticates or is already authenticated, the HUMANIST application forwards the browser to the attacker's phishing page. The phishing page can mimic the HUMANIST login screen to harvest credentials, prompt for multi-factor codes, or deliver malicious payloads.

Refer to the Siber Güvenlik Notification TR-26-0737 for advisory details.

Detection Methods for CVE-2026-14219

Indicators of Compromise

Outbound HTTP 302 or 301 responses from HUMANIST HR endpoints containing external Location headers
Access log entries with redirect parameters such as url=, redirect=, next=, or returnUrl= pointing to non-HUMANIST hostnames
User reports of HUMANIST-branded links landing on unfamiliar login pages
Proxy or web gateway telemetry showing HUMANIST URLs immediately preceding requests to newly registered or low-reputation domains

Detection Strategies

Inspect HUMANIST web server access logs for query parameters that carry absolute URLs or protocol-relative values referencing external hosts
Correlate email gateway URL rewriting data with HUMANIST redirect chains to surface abused parameters
Deploy web application firewall (WAF) rules that flag redirect parameters resolving to hostnames outside the organization's domain allow list
Monitor for unusual clusters of clicks on identical HUMANIST URLs originating from phishing campaigns

Monitoring Recommendations

Enable detailed HTTP request logging on HUMANIST HR reverse proxies and retain logs for at least 90 days
Alert on HUMANIST responses where the Location header host does not match approved corporate domains
Feed proxy and DNS telemetry into a SIEM to correlate HUMANIST redirects with domain reputation feeds
Track user-reported phishing submissions that reference HUMANIST URLs to accelerate takedown requests

How to Mitigate CVE-2026-14219

Immediate Actions Required

Upgrade HUMANIST Digital Human Resources to version 26.1 or later
Audit HUMANIST access and application logs for redirect parameter abuse since the deployment of version 26.0
Notify HR portal users about phishing risk and reinforce verification of login page URLs
Add WAF rules that reject redirect parameters containing absolute external URLs until patching is complete

Patch Information

Bilin Software and Informatics Consultancy Inc. addresses this issue in HUMANIST Digital Human Resources version 26.1. Consult the Siber Güvenlik Notification TR-26-0737 for vendor guidance and update procedures.

Workarounds

Configure a reverse proxy or WAF to strip or validate redirect parameters against a strict host allow list
Restrict outbound redirects from HUMANIST endpoints to relative paths only
Enforce user awareness training that highlights inspecting the final destination of HR portal links
Enable email gateway URL rewriting and time-of-click analysis for HUMANIST domains

bash

# Example NGINX rule to block external redirect targets on HUMANIST endpoints
location /humanist/ {
    if ($arg_url ~* "^https?://(?!hr\.example\.com)") {
        return 400;
    }
    if ($arg_redirect ~* "^https?://(?!hr\.example\.com)") {
        return 400;
    }
    proxy_pass http://humanist_backend;
}