bson_strfreev function
Source GCVE Database
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
Thin evidence
One scorer or none| CNA (mongodb) | CVSS 3.1 | 4.0 |
|---|
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 2 Jul 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.