CVE-2026-46600
High
Description
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
SeverityHigh
CVSS7.5
Exploit probability46. percentile0.5%
ProductStdlib
PublishedJul 21, 2026
First seenJul 21, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- stdlib1.26.6, 1.27.0-rc.3 or later
- golang.org/x/net0.56.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| stdlibGo | 1.26.0-0 ≤ v < 1.26.6, 1.27.0-0 ≤ v < 1.27.0-rc.3 | 1.26.6, 1.27.0-rc.3 |
| golang.org/x/netGo | v < 0.56.0 | 0.56.0 |
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