CVE-2026-46600

Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage

Published Jul 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.

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
First Time appeared Golang
Golang net
Weaknesses CWE-125
Vendors & Products Golang
Golang net
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'}

ssvc

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

Type Values Removed Values Added
Description Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
Title Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Go
Published
Updated
Aug 14, 2026, 3:46 PM
Reserved
May 15, 2026, 5:35 PM
Status
Deferred
Published
Jul 21, 2026, 8:17 PM
Modified
Oct 24, 2026, 7:10 PM