Detections
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AlmaLinux 9 : grafana (ALSA-2026:58982)

high Nessus Plugin ID 340150

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:58982 advisory.

 * grafana: Grafana: Privilege escalation via dashboard overwrite (CVE-2026-33377)
 * grafana: Grafana Auth Proxy: Unauthorized access due to incorrect IPv6 allow-list default (CVE-2026-33376)


 Bug Fix(es) and Enhancement(s):

 * Avoid unbounded memory growth [almalinux-9.8.z] (JIRA:AlmaLinux-242865)
 * Limit the size of the request body before processing it (JIRA:AlmaLinux-242866)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 affected grafana and / or grafana-selinux packages.

See Also

https://access.redhat.com/errata/RHSA-2026:58982

https://errata.almalinux.org/9/ALSA-2026-58982.html

Plugin Details

Severity: High

ID: 340150

File Name: alma_linux_ALSA-2026-58982.nasl

Version: 1.1

Type: Local

Published: 8/26/2026

Updated: 8/26/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-33377

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

CVSS Score Source: CVE-2026-33376

Vulnerability Information

CPE: cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:grafana-selinux, p-cpe:/a:alma:linux:grafana

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/24/2026

Vulnerability Publication Date: 5/13/2026

Reference Information

CVE: CVE-2026-33376, CVE-2026-33377

CWE: 183, 267

RHSA: 2026:58982