CVE-2026-106432Heap buffer overflow via 32-bit string-length truncation in MongoDB PHP Driver
Updated under an hour ago ()
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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 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.
- CVSS
- 3.6 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-681
- 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 1.16.0 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-2741vendor-advisory
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.