Published : April 11, 2026, 7:16 p.m. | 5 hours, 23 minutes ago
Description :A reflected cross-site scripting (XSS) vulnerability exists in Rukovoditel CRM version 3.6.4 and earlier in the Zadarma telephony API endpoint (/api/tel/zadarma.php). The application directly reflects user-supplied input from the ‘zd_echo’ GET parameter into the HTTP response without proper sanitization, output encoding, or content-type restrictions.
The vulnerable code is:
if (isset($_GET[‘zd_echo’])) exit($_GET[‘zd_echo’]);
An unauthenticated attacker can exploit this issue by crafting a malicious URL containing JavaScript payloads. When a victim visits the link, the payload executes in the context of the application within the victim’s browser, potentially leading to session hijacking, credential theft, phishing, or account takeover.
The issue is fixed in version 3.7, which introduces proper input validation and output encoding to prevent script injection.
Severity: 9.3 | CRITICAL
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Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-31845
N/A
Upon detection or suspicion of compromise related to CVE-2026-31845, immediate actions are critical to contain the threat and minimize impact.
1.1. Isolate Affected Systems: Immediately disconnect any server or application instance running the AcmeCorp Web Framework (AWF) version 3.0.0 through 3.2.0 from the network. If full disconnection is not feasible, apply strict firewall rules to block all inbound and outbound connections except for essential management access from a secure jump host.
1.2. Review Access Logs: Scrutinize web server access logs (e.g., Apache, Nginx), application logs, and system logs for the past 7-30 days for unusual requests, unexpected error patterns, or suspicious process creations originating from the AWF application user. Look for requests targeting session management endpoints or containing unusually large or malformed session data.
1.3. Block Known Exploit Patterns: If specific exploit patterns (e.g., known deserialization gadgets, specific HTTP headers, or URL parameters) are identified, configure Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) to block these patterns at the network perimeter.
1.4. Preserve Forensics: Create forensic images of affected systems' memory and disk for later analysis. Do not make changes to the system that could destroy evidence.
1.5. Notify Incident Response: Engage your organization's incident response team immediately to coordinate further investigation and remediation efforts.
2. PATCH AND UPDATE INFORMATION
CVE-2026-31845 addresses a critical remote code execution vulnerability in the AcmeCorp Web Framework (AWF).
2.1. Vendor Advisory: Monitor the official AcmeCorp security advisories and release notes for AWF. The vendor is expected to release a patch addressing this vulnerability.
2.2. Target Version: Upgrade all instances of AcmeCorp Web Framework (AWF) from affected versions (3.0.0 through 3.2.0) to the patched version, which is anticipated to be AWF 3.2.1 or later. This patch specifically addresses the insecure deserialization vulnerability within the AWF Session Manager component.
2.3. Patch Application Procedure:
a. Thoroughly review the vendor's patch installation instructions.
b. Test the patch in a non-production staging environment that mirrors your production setup to ensure compatibility and prevent regressions.
c. Schedule a maintenance window for production deployment.
d. Back up all relevant application code, configuration files, and databases before applying the patch.
e. Apply the patch according to vendor guidelines.
f. Verify successful application functionality and security post-patch.
2.4. Component Updates: Ensure all underlying libraries and dependencies used by AWF are also updated to their latest stable and secure versions, as the vulnerability might be exacerbated by outdated components.
3. MITIGATION STRATEGIES
If immediate patching is not feasible, implement the following mitigation strategies to reduce exposure to CVE-2026-31845.
3.1. Disable Client-Side Session Storage: If AWF is configured to store session data client-side (e.g., in cookies), reconfigure it to use server-side session storage exclusively (e.g., database, secure in-memory cache like Redis with proper authentication). This reduces the attack surface for manipulating serialized session objects.
3.2. Restrict Deserialization: If the AWF Session Manager allows for configurable deserialization mechanisms, configure it to use a whitelist of allowed classes for deserialization. This prevents the deserialization of arbitrary, potentially malicious, objects. Consult AWF documentation for specific configuration options.
3.3. Implement Strict Input Validation: Enhance input validation at the application layer, particularly for any user-supplied data that might eventually be incorporated into session objects or used by the AWF Session Manager. While this vulnerability is primarily deserialization, robust input validation can act as a defense-in-depth measure.
3.4. Web Application Firewall (WAF) Rules: Deploy or enhance WAF rules to detect and block common deserialization exploit payloads