TI-2026-63950 Aliases CVE-2026-97152 GHSA-qf87-675j-h456

Heap-based buffer overflow in Nanomsg

LOW 37CWE-122Published 2026-09-24 · Updated 2026-09-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Nanomsg versions 0.5-beta through 1.x before 1.2.3 has a remotely exploitable buffer overflow in the WebSocket transport, due to an unchecked copy of the Sec-WebSocket-Version header, through snprintf.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00313 24th percentileScored 2026-11-08

Fix Fixed Nanomsg (Nanomsg): 1.2.3

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
Nanomsg	Nanomsg	0.5.0 to before 1.2.3	1.2.3	Patch available	CNA

Nanomsg VendorNanomsg Affected 0.5.0 to before 1.2.3 Fixed in 1.2.3 Patch available CNA

Remediation

Fix · CNA Nanomsg (Nanomsg) Fixed in 1.2.3

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2026-97152
2026-10-03 Alias added: GHSA-qf87-675j-h456

References

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences