CVE-2026-103936 libp2p - Denial of Service

libp2p < 6.0.28 contains a denial of service caused by unauthenticated STUN Binding Requests processed before authentication, letting remote attackers crash the process via crafted UDP packets, exploit requires network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial Of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
15 October 2026
Updated
16 October 2026
Weakness
CWE-248

Vendor fix

Update to version 6.0.28 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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