CVE-2026-6914

MD5 checksum creation may cause availability loss

State: Published
Severity: 7.1 High
Published: Apr 29, 2026
Updated: Apr 29, 2026
Reserved: Apr 23, 2026

Description

Computing the MD5 checksum of a malformed BSON object under specific conditions may cause loss of availability in MongoDB server. This issue affects all MongoDB Server v8.2 versions, all MongoDB Server v8.1 versions, MongoDB Server v8.0 versions prior to 8.0.21, MongoDB Server v7.0 versions prior to 7.0.32

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	mongodb
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	mongodb

Weaknesses

CWE-191 Integer underflow (wrap or wraparound)

Affected Products

Product	Versions
MongoDB ServerMongoDB	8.2.0 to before 8.2.7Affected 8.1.0 through 8.1.*Affected 8.0.0 to before 8.0.21Affected 7.0.0 to before 7.0.32Affected

References

https://jira.mongodb.org/browse/SERVER-119981

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