| Name | CVE-2026-6811 |
| Description | Stack exhaustion vulnerability in the MongoDB PHP driver can cause application crashes when processing deeply nested BSON documents in unusual circumstances when the source of these BSON documents is not MongoDB Server. |
| 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) |
| Debian Bugs | 1136802 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| php-mongodb (PTS) | bullseye | 1.9.0+1.7.5-2 | vulnerable |
| bookworm | 1.15.0+1.11.1+1.9.2+1.7.5-1 | vulnerable |
| trixie | 2.0.0-1 | vulnerable |
| forky, sid | 2.1.0-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| php-mongodb | source | (unstable) | (unfixed) | | | 1136802 |
Notes
[trixie] - php-mongodb <no-dsa> (Minor issue)
[bookworm] - php-mongodb <no-dsa> (Minor issue)
[bullseye] - php-mongodb <postponed> (Minor issue, DoS in unusual circumstances)
https://jira.mongodb.org/browse/PHPC-2636
Fixed by: https://github.com/mongodb/mongo-php-driver/commit/2060beb85a041182550d022ec223783ffdaf6ec8 (1.21.5, 2.1.8)