MongoDB client C Driver may infinitely loop when validating certain BSON input data
Priority LOW 35CWE-835Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-835.
Summary
When calling bson_utf8_validate on some inputs a loop with an exit condition that cannot be reached may occur, i.e. an infinite loop. This issue affects All MongoDB C Driver versions prior to versions 1.25.0.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01103 65th percentileScored 2026-11-07
Fix Fixed MongoDB C Driver (MongoDB Inc): 1.25.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA MongoDB C Driver (MongoDB Inc) Fixed in 1.25.0
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-0437
- 2026-10-03 Alias added: GHSA-8549-4c5j-x7g2
References
More MongoDB C Driver vulnerabilities
- TI-2026-62966 Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream CVSS 4.0CRITICAL 9.2
- TI-2026-05870 MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow CVSS 4.0HIGH 8.6
- TI-2026-62968 Integer Underflow → Heap Out-of-Bounds Read in `bson_new_from_buffer() CVSS 4.0MEDIUM 6.9
- TI-2024-07001 Accessing Untrusted Directory May Allow Local Privilege Escalation CVSS 3.1HIGH 7.8
- TI-2026-58387 Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client CVSS 4.0HIGH 8.2
- TI-2026-58386 Silent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parser CVSS 4.0MEDIUM 6.3
Sources
- CVE-2023-0437 · CVE Program
- CVE-2023-0437 · NVD
- FIRST EPSS
- GHSA-8549-4c5j-x7g2 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-0437 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences