CVE-2026-93295 MISP Background Job Argument Injection via Console Path Switches Enables Remote Code Execution
Attackers can achieve remote code execution by injecting path switches into background job arguments via the contact form, allowing arbitrary PHP execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93295?
CVE-2026-93295 is a high-severity code injection vulnerability in misp, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
MISP contains a vulnerability in its background job dispatch mechanism that allows remote code execution as the web user. Background job arguments are passed directly as the argv of the CakePHP console process. CakePHP's ShellDispatcher::_parsePaths() scans the entire argv for path switches (-app, --app, -working, --working, -root, --root, -webroot, --webroot) and uses the following element as the application root. The events/contact endpoint passes user-controlled fields (message and person) into job arguments without validation. An attacker who can submit the contact form can set the person field to a reserved switch and the message field to a phar:// URI pointing to a malicious archive. The CakePHP bootstrap then includes Config/core.php from within that archive, executing attacker-controlled PHP code with the privileges of the web user.
The vulnerability requires the ability to submit the events/contact form (or any other endpoint that forwards user input into background job arguments). No special timing or race condition is required; the attack is deterministic once the crafted parameters are accepted. The impact is full remote code execution in the context of the MISP web server process, allowing data exfiltration, persistence, and lateral movement within the host.
Which versions are affected by CVE-2026-93295?
How do I fix CVE-2026-93295?
No fix has been published for CVE-2026-93295 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-93295 being exploited?
There is no known exploitation of CVE-2026-93295 in the wild and no public exploit code.
Sources
Also known as GHSA-2q9g-8hcw-6c23.