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CVE-2023-0437
MongoDB client C Driver may infinitely loop when validating certain BSON input data
Medium5.3EPSS 1.1%
- Published
- Updated
- Reserved
- Assigned by
- mongodb
Description
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.
Timeline
ID reserved
By mongodb
- 12 months later
· 12 months later
Published
- 22 months later
· 22 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| mongodbCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.1% · top 34% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
MongoDB Inc · MongoDB C Driver
- affected 1.0.0 – < 1.25.0
References (4)
- https://jira.mongodb.org/browse/CDRIVER-4747 (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/7GUVOAFZFSYTNBF6R7H4XJM5DHWBRQ6P/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2025/05/msg00027.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/05/msg00012.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-0437)Record last updated .