CVE-2024-5629: Out-of-bounds read in bson module of PyMongo

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-05 · updated 2026-06-17
Weakness: CWE-125

Description

An out-of-bounds read in the 'bson' module of PyMongo 4.6.2 or earlier allows deserialization of malformed BSON provided by a Server to raise an exception which may contain arbitrary application memory.

Affected products

Debian Linux: 10.0
MongoDB Inc PyMongo: before 4.6.3 — fixed in 4.6.3

How to fix

Upgrade to a fixed version: MongoDB Inc PyMongo 4.6.3. Check the vendor advisory for mitigations.

References

https://jira.mongodb.org/browse/PYTHON-4305
https://lists.debian.org/debian-lts-announce/2024/06/msg00007.html
https://jira.mongodb.org/browse/PYTHON-4305
https://lists.debian.org/debian-lts-announce/2024/06/msg00007.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00032.html

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