High 7.5Published Jul 21, 2026

CVE-2026-46600Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage

Updated under an hour ago (Oct 27, 2026, 10:30 AM ET)

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It affects Go standard library net and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Go standard library net

Exploited in the last 30 days

Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Go
NVD analysis: Deferred
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Go standard library net go_standard_library:net (from the name)	from 1.26.0-0 before 1.26.6; 1.27.0-0 builds before 1.27.0-rc.3	CNA record
golang.org/x/net golang.org/x/net/dns/dnsmessage golang.org_x_net:dns_dnsmessage (from the name)	before 0.56.0	CNA record

References

References

https://go.dev/cl/786345
https://go.dev/issue/79795
https://groups.google.com/g/golang-announce/c/94pEornpRlI
https://pkg.go.dev/vuln/GO-2026-5942

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.