CVE-2026-46600

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

CVE-2026-46600 is fixed in 8 products on 2 platforms, first by DEBIAN-CVE-2026-46600, released July 24, 2026. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms

CVSS

7.5

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0055

46th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Go Programming Language	1.27.3	Go Programming Language 1.27.3	Oct 19, 2026
Linux
alloy · opensuse-leap 16.0	1.19.2-160000.1.1	OPENSUSE-SU-2026:22032-1	Oct 6, 2026
alloy · sles 15.7	1.19.2-150700.15.29.1	SUSE-SU-2026:4408-1	Oct 1, 2026
alloy · sles 16.0	1.19.2-160000.1.1	SUSE-SU-2026:24148-1	Oct 6, 2026
golang-golang-x-net · Debian 14	1:0.56.0-1	DEBIAN-CVE-2026-46600	Jul 24, 2026
govulncheck-vulndb · opensuse-leap 16.0	0.0.20260827T195228-160000.1.1	OPENSUSE-SU-2026:21761-1	Sep 4, 2026
govulncheck-vulndb · sles 16.0	0.0.20260827T195228-160000.1.1	SUSE-SU-2026:23625-1	Sep 4, 2026
kubevirt · sles 15.7	1.7.4-150700.3.33.1	SUSE-SU-2026:3480-1	Aug 4, 2026
kubevirt-1.6 · sles 15.7	1.6.6-150700.15.17.1	SUSE-SU-2026:3630-1	Aug 17, 2026
kubevirt1.8 · opensuse-leap 16.0	1.8.4-160000.1.1	OPENSUSE-SU-2026:21590-1	Aug 18, 2026
rclone · opensuse-leap 16.0	1.75.1-bp160.1.1	OPENSUSE-SU-2026:21999-1	Sep 28, 2026

Details

Published
July 21, 2026
Weakness
Out-of-bounds Read
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46600

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