CVE Analysis 3 min read

CVE-2026-5791: Cross-Site request forgery (CSRF) Vulnerability

CVE-2026-5791 CVSS 9.6 CRITICAL vulnerability analysis

CVE-2026-5791 is a critical severity vulnerability (CVSS 9.6) identified in the National Vulnerability Database. Cross-Site request forgery (CSRF) vulnerability in DivvyDrive Information Technologies Inc. DivvyDrive allows Cross Site Request Forgery. This issue affects DivvyDrive: from 4.8.2.9 before 4.8.3.2.

TL;DR: This is a vulnerability vulnerability (CVSS 9.6 CRITICAL). Authentication: Unknown. Patch immediately.

What This Vulnerability Is

Cross-Site request forgery (CSRF) vulnerability in DivvyDrive Information Technologies Inc. DivvyDrive allows Cross Site Request Forgery. This issue affects DivvyDrive: from 4.8.2.9 before 4.8.3.2.

The National Vulnerability Database assigned this issue a CVSS base score of 9.6, placing it in the CRITICAL category. The identifier CVE-2026-5791 was published on 2026-05-07T13:16:13.647.

CVE Identifier
CVE-2026-5791
CVSS Base Score
9.6 / 10.0 (CRITICAL)
Published
2026-05-07T13:16:13.647
NVD Entry
https://nvd.nist.gov/vuln/detail/CVE-2026-5791
MITRE Entry
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-5791

Who Is Affected

Based on the vulnerability data published by NVD, the following products and configurations are identified as affected:

  • Specific affected products are listed in the NVD entry. Review the CPE data for your stack.

If your organization uses any of the above, this vulnerability applies to your environment. Even if your specific version is not listed, review the full CPE match data to confirm.

What Attack Traffic Looks Like

Illustrative patterns for defensive detection. Not a working exploit.

CSRF attacks trick authenticated users into submitting state-changing requests. Watch for:

  • POST/PUT/DELETE requests with missing or mismatched Origin/Referer headers
  • State-changing requests without CSRF tokens
  • Form submissions originating from external domains

How to Detect It

Sigma Rule

title: Cross-Origin State-Changing Request Without CSRF Token
id: auto-cwe352-detection
status: experimental
description: Detects POST/PUT/DELETE requests from external referrers to authenticated endpoints.
logsource:
  category: webserver
detection:
  selection_method:
    cs-method:
      - 'POST'
      - 'PUT'
      - 'DELETE'
  filter_internal:
    cs-referer|contains: 'sherlockforensics.com'
  condition: selection_method and not filter_internal
level: medium

IOC Hunt List

  • Admin account changes or privilege modifications without corresponding admin login
  • Password resets or email changes initiated from external referrers
  • Bulk state-changing operations from a single authenticated session

What to Do About It

Here is what we recommend, in order of priority:

  1. Check your exposure. Determine whether the affected software or component is present in your environment. Asset inventories and software composition analysis (SCA) tools are the fastest route.
  2. Apply the patch. If a vendor patch or updated version is available, apply it. Check the references below for vendor advisories.
  3. Mitigate if patching is not immediate. If you cannot patch right now, evaluate whether network segmentation, access control changes, or configuration adjustments reduce the attack surface for this specific vulnerability.
  4. Monitor for exploitation. Check whether proof-of-concept exploit code exists. The CISA Known Exploited Vulnerabilities catalog tracks actively exploited CVEs.
  5. Document your response. Record what you checked, when you patched, and what residual risk remains. This matters for compliance and for incident response if this vulnerability is exploited later.

Triage Quick Start

Run as administrator. Collect artifacts before applying patches or making changes:

# Linux/Unix systems
tar czf /tmp/triage-$(hostname)-$(date +%s).tgz \
  /var/log/syslog /var/log/auth.log /var/log/messages \
  /var/log/secure /var/log/apache2/ /var/log/nginx/ \
  /etc/passwd /etc/shadow \
  /root/.bash_history \
  /home/*/.bash_history \
  /tmp/ /var/tmp/ 2>/dev/null

# Windows systems (PowerShell)
# Compress-Archive -Path C:\Windows\System32\winevt\Logs\*,C:\inetpub\logs\* -DestinationPath C:\triage.zip

If you need help analyzing these artifacts, call Sherlock Forensics at 604.229.1994.

Why This Matters for Companies Without Security Teams

A CVSS score of 9.6 means this vulnerability is straightforward to exploit, likely to cause significant damage, or both. For startups and small companies operating without a dedicated security team, vulnerabilities at this severity level represent real operational risk rather than theoretical concern.

The challenge is not awareness. Vulnerability databases are public. The challenge is triage: understanding whether a given CVE affects your specific stack, and knowing what to do about it before an attacker does. If you lack the internal capacity to perform that assessment, an external review of your exposure is a concrete next step.

Sherlock Forensics provides vulnerability assessment and penetration testing for organizations that need to understand their attack surface without building a full internal security function.

References and Further Reading