RHEL 9 : grafana-pcp (RHSA-2026:98479)

medium Nessus Plugin ID 378815

Synopsis

The remote Red Hat host is missing one or more security updates for grafana-pcp.

Description

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:98479 advisory.

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL grafana-pcp package based on the guidance in RHSA-2026:98479.

Plugin Details

Severity: Medium

ID: 378815

File Name: redhat-RHSA-2026-98479.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

Percentile: 98.08

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-56858

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-111943

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:grafana-pcp

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/11/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-111943, CVE-2026-33818, CVE-2026-56853, CVE-2026-56858, CVE-2026-56860, CVE-2026-56862, CVE-2026-78669, CVE-2026-97031

CWE: 1050, 295, 770, 776, 79

RHSA: 2026:98479

Detections

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