High ELSA-2026-35831 1 CVE

Important: grafana-pcp security update (Oracle Linux 8)

Published Jul 7, 2026 · Updated Jul 7, 2026

Ecosystem: Oracle Linux

Summary

[5.1.1-16]
- Resolves RHEL-183733: CVE-2026-39821

[5.1.1-15]
- Resolves RHEL-183733: CVE-2026-39821

Fixed packages 1

Release	Package	Fixed in
Oracle Linux · 8	grafana-pcp	0:5.1.1-16.el8_10

Vulnerabilities 1

Critical 9.6

CVE-2026-39821

Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode("xn--example-.com") incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege …

Go standard library golang.org/x/net net/http net/http/internal/http2 Debian Ubuntu Azure Linux Alpine Wolfi Go

May 22, 2026