Hnswlib 0.7.0 has a double free in init_index when the M argument is a large integer.
Priority LOW 30CWE-415Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- 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 and GitHub. Impact type from CWE-415 and the CVSS impact.
Summary
Hnswlib 0.7.0 has a double free in init_index when the M argument is a large integer.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00586 48th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed hnswlib (PyPI): 0.8.0
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | hnswlib (PyPI) | before 0.8.0 | 0.8.0 | Patch available | GHSA-xwc8-rf6m-xr86 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- hnswlib (PyPI) Vendor— Affected before 0.8.0 Fixed in 0.8.0 Patch available GHSA-xwc8-rf6m-xr86
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hnswlib_project:hnswlib:0.7.0:*:*:*:*:*:*:* | 0.7.0 | Vulnerable | Hnswlib Project |
- cpe:2.3:a:hnswlib_project:hnswlib:0.7.0:*:*:*:*:*:*:* Versions 0.7.0 Vulnerable ·Hnswlib Project
Remediation
- Fix · GHSA-xwc8-rf6m-xr86 hnswlib (PyPI) Fixed in 0.8.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-37365
- 2026-10-03 Alias added: GHSA-xwc8-rf6m-xr86
References
Sources
- CVE-2023-37365 · CVE Program
- CVE-2023-37365 · NVD
- FIRST EPSS
- GHSA-xwc8-rf6m-xr86 · GitHub Advisory Database · CC BY 4.0
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