An issue was discovered in py-lmdb 0.97.
Priority LOW 36CWE-787Published · 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
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-787 and the CVSS impact.
Summary
An issue was discovered in py-lmdb 0.97. mdb_node_del does not validate a memmove in the case of an unexpected node->mn_hi, leading to an invalid write operation. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.
Why it matters now
EPSS 0.01586 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | lmdb (PyPI) | up to 0.97 | — | No fix listed | GHSA-r8g9-w4f3-9crm |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- lmdb (PyPI) Vendor— Affected up to 0.97 Fixed in — No fix listed GHSA-r8g9-w4f3-9crm
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:py-lmdb_project:py-lmdb:*:*:*:*:*:*:*:* | up to 0.97 | Vulnerable | Py-lmdb Project |
- cpe:2.3:a:py-lmdb_project:py-lmdb:*:*:*:*:*:*:*:* Versions up to 0.97 Vulnerable ·Py-lmdb Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16226
- 2026-10-03 Alias added: GHSA-r8g9-w4f3-9crm
References
More Py-lmdb Project Py-lmdb vulnerabilities
- TI-2019-12209 An issue was discovered in py-lmdb 0.97. CVSS 3.1CRITICAL 9.8
- TI-2019-12207 An issue was discovered in py-lmdb 0.97. CVSS 3.1CRITICAL 9.8
- TI-2019-12206 An issue was discovered in py-lmdb 0.97. CVSS 3.1CRITICAL 9.8
- TI-2019-12210 An issue was discovered in py-lmdb 0.97. CVSS 3.1HIGH 7.5
Sources
- CVE-2019-16226 · CVE Program
- CVE-2019-16226 · NVD
- FIRST EPSS
- GHSA-r8g9-w4f3-9crm · GitHub Advisory Database · CC BY 4.0
- CVE-2019-16226 · 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