CVE-2026-112368 Unbounded Recursion in phongo_bson_visit_document/visit_array:
An attacker can cause a denial of service by sending crafted BSON data that triggers unbounded recursion in the MongoDB PHP driver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-112368?
CVE-2026-112368 is a high-severity denial of service vulnerability in MongoDB Inc. PHP Driver, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An uncontrolled recursion weakness in the BSON decoding logic of the MongoDB PHP driver may allow an unauthenticated party who can supply crafted binary document data to the decoder to exhaust the process stack. This may cause the PHP process using the driver to terminate unexpectedly, resulting in a loss of availability for that process. The condition occurs below the PHP layer and cannot be intercepted by application-level error handling.
Weakness: CWE-674
Which versions are affected by CVE-2026-112368?
How do I fix CVE-2026-112368?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-112368 being exploited?
There is no known exploitation of CVE-2026-112368 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-112368, GHSA-69c3-9c25-6gj9, UBUNTU-CVE-2026-112368.