CVE-2026-106432
highThe BSON encoder in the MongoDB PHP Driver converts a string length to a 32-bit value without validation.
Vendor / product: Mongodb — php driver
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
8.2
8.2 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-08 20:17
Modified: 2026-10-13 20:09
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
mongodb / php_driver ≥1.3.0 <1.21.1, ≥2.0.0 <2.1.11, ≥2.2.0 <2.5.4
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://jira.mongodb.org/browse/PHPC-2741
References
- https://jira.mongodb.org/browse/PHPC-2741 cna@mongodb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗