CVE-2026-119760

sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()

Published Oct 30, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.
Title sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()
First Time appeared Sniproxy Project
Sniproxy Project sniproxy
Weaknesses CWE-476
CPEs cpe:2.3:a:sniproxy_project:sniproxy:*:*:*:*:*:*:*:*
Vendors & Products Sniproxy Project
Sniproxy Project sniproxy
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 5, 2026, 2:25 AM
Reserved
Oct 30, 2026, 3:35 PM
Status
Deferred
Published
Oct 30, 2026, 6:17 PM
Modified
Nov 5, 2026, 3:17 AM