CVE-2026-84965Medium· 5.1▾ SunlitAn integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits,…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 28.1 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 22.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.10%
0.10% → 0.1%
An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service.
c_driver >= 1.10.0, < 1.30.9c_driver >= 2.0.0, < 2.5.2Upgrade past the affected range:
c_driver 2.5.2Connected by shared product, vendor, weakness, or advisory.
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