| Name | CVE-2026-106432 |
| Description | The BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation. When an affected application encodes a string near 4 GiB, the allocation size can wrap while the copy operation uses the original length. The resulting heap buffer overflow can corrupt process memory or terminate the PHP process. Reaching this issue requires a non-default runtime configuration that permits multi-gigabyte values. No MongoDB server interaction is required. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6589-1 |
| Debian Bugs | 1150514 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| php-mongodb (PTS) | bookworm | 1.15.0+1.11.1+1.9.2+1.7.5-1 | vulnerable |
| trixie | 2.0.0-1 | vulnerable |
| trixie (security) | 2.0.0-1+deb13u2 | fixed |
| forky | 2.5.3-1 | vulnerable |
| sid | 2.5.5-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://jira.mongodb.org/browse/PHPC-2741
Fixed by: https://github.com/mongodb/mongo-php-driver/commit/79036dd7a4c946cfef2d0105f8102f26d685b260 (2.5.4, 2.1.11, 1.21.11)