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CVE-2024-6381VulnerabilityPublished Updated

bson_strfreev function

Source GCVE Database

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Authoritative record:CVE-2024-6381· Medium 4.0

Not known to be exploited · CVSS 4.0 Medium · fixed in 1.26.2 : update affected systems when convenient.

Data as of 30 Oct 2026, 00:36 UTC

CVSS 3.1 base score
4.0Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (mongodb)CVSS 3.14.0
Patch
Available – fixed in 1.26.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Jul 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

A fix is available in libbson version 1.26.2 and later. Users should upgrade to version 1.26.2 or newer to remediate this vulnerability.

Description

The bson_strfreev function in the MongoDB C driver library (libbson) versions prior to 1.26.2 may be vulnerable to an integer overflow that causes the function to attempt freeing memory at a negative offset, potentially leading to memory corruption.

References

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