RHSA-2026:98479: Important: grafana-pcp security update

Published Nov 11, 2026
·
Updated

The Grafana plugin for Performance Co-Pilot includes datasources for scalable time series from pmseries and Redis, live PCP metrics and bpftrace scripts from pmdabpftrace, as well as several dashboards.Security Fix(es): encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818) net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860) net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853) html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858) crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

12 affected componentsFixes available
redhat/grafana-pcp<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debuginfo<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debugsource<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debuginfo<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debugsource<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debuginfo<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp-debugsource<5.1.1-17.el9_9.3
5.1.1-17.el9_9.3
redhat/grafana-pcp<5.1.1-17.el9_9.3.aa
5.1.1-17.el9_9.3.aa
redhat/grafana-pcp-debuginfo<5.1.1-17.el9_9.3.aa
5.1.1-17.el9_9.3.aa
redhat/grafana-pcp-debugsource<5.1.1-17.el9_9.3.aa
5.1.1-17.el9_9.3.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/grafana-pcp to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3
  2. Upgrade

    Upgrade redhat/grafana-pcp-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3
  3. Upgrade

    Upgrade redhat/grafana-pcp-debugsource to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3
  4. Upgrade

    Upgrade redhat/grafana-pcp to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3.aa
  5. Upgrade

    Upgrade redhat/grafana-pcp-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3.aa
  6. Upgrade

    Upgrade redhat/grafana-pcp-debugsource to a version that resolves this vulnerability.

    Fixed in 5.1.1-17.el9_9.3.aa

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

Which installed packages are covered by this update?

The advisory lists redhat/grafana-pcp, redhat/grafana-pcp-debuginfo, and redhat/grafana-pcp-debugsource.

2

What types of impact are addressed?

The fixes include several denial-of-service issues in Go components, a cross-site scripting issue in html/template, and a man-in-the-middle risk involving untrusted intermediate certificates in crypto/x509.

3

Which network-facing functionality may be relevant when triaging exposure?

The listed issues include HTTP/2 handling in net/http and golang.org/x/net/http2, TLS processing, URL path resolution, and certificate validation. Exposure depends on whether the Grafana PCP deployment accepts or processes attacker-controlled traffic or inputs through those components.

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