CVE-2026-106432
highpriority · track · 33EPSS 0.002 · 6 %ileDEUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 0.4–8.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (10)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3830MongoDB Treiber: Mehrere SchwachstellenDeutsch2026-10-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen MongoDB Treibern ausnutzen, um einen Denial of Service Angriff durchzuführen und um Daten zu manipulieren.
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
- https://jira.mongodb.org/browse/PHPC-2741Vendor Advisory
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