CVE-2026-106436Application denial of service and data truncation via unchecked BSON append failures in MongoDB PHP Driver
Updated under an hour ago ()
Does this affect you?
It affects MongoDB PHP Driver. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-252
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB PHP Driver mongodb:php_driver (from the name) | from 1.3.0 before 1.21.11; from 2.0.0 before 2.1.11; from 2.2.0 before 2.5.4 | CNA record |
mongodb php_driver mongodb:php_driver | from 1.3.0 before 1.21.1; from 2.0.0 before 2.1.11; from 2.2.0 before 2.5.4 | NVD |
References
- https://jira.mongodb.org/browse/PHPC-2739vendor-advisory, issue-tracking
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.