CVE-2026-46600
published 2026-07-21CVE-2026-46600: Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.55%
44.0th percentile
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| go_standard_library | net | >= 1.26.0-0 < 1.26.6 | 1.26.6 |
| go_standard_library | net | >= 1.27.0-0 < 1.27.0-rc.3 | 1.27.0-rc.3 |
| golang.org | x_net_golang.org_x_net_dns_dnsmessage | < 0.56.0 | 0.56.0 |
| rhacm2 | insights-client-rhel9 | — | — |
| rhacm2 | insights-metrics-rhel9 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
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GHSA
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
ghsa_unreviewed·2026-07-21
CVE-2026-46600 Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
VulDB
Google Go up to 0.55.x x-net-dns-dnsmessage out-of-bounds
vuldb·2026-07-21
CVE-2026-46600 [CRITICAL] Google Go up to 0.55.x x-net-dns-dnsmessage out-of-bounds
A vulnerability identified as critical has been detected in Google Go up to 0.55.x. This issue affects some unknown processing of the component x-net-dns-dnsmessage. Performing a manipulation results in out-of-bounds read.
This vulnerability was named CVE-2026-46600. The attack may be initiated remotely. There is no available exploit.
Red Hat
golang.org/x/net/dns/dnsmessage: golang.org/x/net/dns/dnsmessage: Denial of Service via invalid DNS record parsing
vendor_redhat·2026-07-21·CVSS 7.5
CVE-2026-46600 [HIGH] CWE-120 golang.org/x/net/dns/dnsmessage: golang.org/x/net/dns/dnsmessage: Denial of Service via invalid DNS record parsing
golang.org/x/net/dns/dnsmessage: golang.org/x/net/dns/dnsmessage: Denial of Service via invalid DNS record parsing
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
A flaw was found in golang.org/x/net/dns/dnsmessage. A remote attacker could send a specially crafted Service Binding (SVCB) or HTTPS resource record (RR) to a system using this component. When parsing this invalid record, the system may panic due to a parameter value overflowing the message buffer. This can lead to a Denial of Service (DoS) condition, making the affected system unavailable.
Package: rhacm2/insights-client-rhel9 (Red Hat Advanced Cluster Management for Kubernetes 2) - Affected
Package: rhacm2/insights-metrics-rhel9 (Red Hat Advanced Cluster Manage
No detection rules found.
No public exploits indexed.
2026-07-21
Published