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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

PUBLISHED Reserved 2026-04-23 | Published 2026-04-29 | Updated 2026-04-29 | Assigner mongodb




HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-191 Integer underflow (wrap or wraparound)

Product status

Default status
unaffected

8.2.0 (custom) before 8.2.7
affected

8.1.0 (custom)
affected

8.0.0 (custom) before 8.0.21
affected

7.0.0 (custom) before 7.0.32
affected

References

jira.mongodb.org/browse/SERVER-119981

cve.org (CVE-2026-6914)

nvd.nist.gov (CVE-2026-6914)

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