CVE-2026-46600: CWE-125: Out-of-bounds Read in Go standard library net
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
AI Analysis
Technical Summary
This vulnerability (CWE-125) occurs in the Go standard library net package when parsing SVCB or HTTPS DNS resource records. If the size of a parameter value exceeds the message buffer, it causes an out-of-bounds read that triggers a panic. The issue affects versions prior to 0.56.0 and the 1.27.0-0 version. No official patch or remediation level has been provided yet, and there are no known exploits in the wild.
Potential Impact
The vulnerability can cause denial of service by crashing applications that parse specially crafted SVCB or HTTPS DNS records. There is no indication of confidentiality or integrity impact. The CVSS score of 7.5 reflects a high severity denial of service risk exploitable remotely without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing input validation or sandboxing to mitigate potential crashes when parsing untrusted DNS records.
CVE-2026-46600: CWE-125: Out-of-bounds Read in Go standard library net
Description
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
CVSS v3.1
Score 7.5high
Affected software
pkg:golang/golang.org/x/net/dns/dnsmessageRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-125) occurs in the Go standard library net package when parsing SVCB or HTTPS DNS resource records. If the size of a parameter value exceeds the message buffer, it causes an out-of-bounds read that triggers a panic. The issue affects versions prior to 0.56.0 and the 1.27.0-0 version. No official patch or remediation level has been provided yet, and there are no known exploits in the wild.
Potential Impact
The vulnerability can cause denial of service by crashing applications that parse specially crafted SVCB or HTTPS DNS records. There is no indication of confidentiality or integrity impact. The CVSS score of 7.5 reflects a high severity denial of service risk exploitable remotely without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing input validation or sandboxing to mitigate potential crashes when parsing untrusted DNS records.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Go
- Date Reserved
- 2026-05-15T17:35:00.814Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5fcbb52a4a8d5989ac6cbb
Added to database: 07/21/2026, 19:42:45 UTC
Last enriched: 08/14/2026, 13:17:29 UTC
Last updated: 09/01/2026, 10:52:09 UTC
Views: 107
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