php-mongodb: The BSON encoder in the MongoDB PHP Driver does not check some return values after a document exceeds libbson's size...
CVE-2026-106436 is fixed in php-mongodb on 1 platform, first by DEBIAN-CVE-2026-106436, released October 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.
The BSON encoder in the MongoDB PHP Driver does not check some return values after a document exceeds libbson's size limit. This can leave the encoder in an invalid state. An unauthenticated actor who can cause an affected application to encode an unusually large data structure can terminate the PHP worker or cause the resulting document to omit fields. No MongoDB server connection or database authentication is required.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| php-mongodb · Debian 13.5 (trixie) | 2.0.0-1+deb13u2 | DEBIAN-CVE-2026-106436 | Oct 28, 2026 |
| php-mongodb · Debian 14 | 2.5.5-1 | DEBIAN-CVE-2026-106436 | Oct 28, 2026 |
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