AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MongoDBGHSA-j5wj-7mj9-v673

Heap out-of-bounds read via corrupt nested BSON in field path error message

MongoDB

CVE-2026-84968 · Published Sep 3, 2026

Medium6.9
Fix: upgrade to 1.21.8 or later (3 fixed versions below)
GitHub advisory

Impact

Heap out-of-bounds read via corrupt nested BSON in field path error message

Patches

Fixed in 1.28.1 and 2.5.1.

Workarounds

Validate BSON prior to parsing.

References

https://jira.mongodb.org/browse/PHPC-2744

Affected versions

PackageAffectedFixed in
mongodb
Product
>= 1.15.0, < 1.21.81.21.8
>= 2.2.0, < 2.5.12.5.1
>= 2.0.0, < 2.1.92.1.9
mongodb/mongodb-extension
Product
>= 1.15.0, < 1.21.81.21.8
>= 2.2.0, < 2.5.12.5.1
>= 2.0.0, < 2.1.92.1.9
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Severity from
GitHub (reviewed advisory)

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