Detections
Analytics
RHEL 9 : grafana (RHSA-2026:98454)
high Nessus Plugin ID 378880
Synopsis
The remote Red Hat host is missing one or more security updates for grafana.Description
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98454 advisory.Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB.
Security Fix(es):
* 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)
* grafana: Grafana: Denial of Service via unbounded memory growth in OAuth login route (CVE-2026-8609)
* grafana: Grafana: Denial of Service via excessive memory allocation from large API request payloads (CVE-2026-33382)
* 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)
* encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)
* grafana: PLUGIN ARCHIVE EXTRACTION ESCAPES THE PLUGIN DIRECTORY, ALLOWING CODE EXECUTION (CVE-2026-15815)
* net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)
* crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031)
* net/textproto: mime/multipart: golang: golang: Denial of Service via memory limit bypass in multipart form parsing (CVE-2026-94440)
* 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 package based on the guidance in RHSA-2026:98454.See Also
https://access.redhat.com/errata/RHSA-2026:98454
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2477246
https://bugzilla.redhat.com/show_bug.cgi?id=2477262
https://bugzilla.redhat.com/show_bug.cgi?id=2499061
https://bugzilla.redhat.com/show_bug.cgi?id=2499062
https://bugzilla.redhat.com/show_bug.cgi?id=2515815
https://bugzilla.redhat.com/show_bug.cgi?id=2515820
https://bugzilla.redhat.com/show_bug.cgi?id=2515827
https://bugzilla.redhat.com/show_bug.cgi?id=2515838
https://bugzilla.redhat.com/show_bug.cgi?id=2515839
https://bugzilla.redhat.com/show_bug.cgi?id=2515840
https://bugzilla.redhat.com/show_bug.cgi?id=2527474
https://bugzilla.redhat.com/show_bug.cgi?id=2548334
https://bugzilla.redhat.com/show_bug.cgi?id=2548336
https://bugzilla.redhat.com/show_bug.cgi?id=2548341
https://bugzilla.redhat.com/show_bug.cgi?id=2548344
Plugin Details
Severity: High
ID: 378880
File Name: redhat-RHSA-2026-98454.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: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-8609
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:grafana-selinux, p-cpe:/a:redhat:enterprise_linux:grafana
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: 5/13/2026
Reference Information
CVE: CVE-2026-111943, CVE-2026-15815, CVE-2026-33376, CVE-2026-33377, CVE-2026-33382, CVE-2026-33818, CVE-2026-56853, CVE-2026-56858, CVE-2026-56859, CVE-2026-56860, CVE-2026-56862, CVE-2026-78667, CVE-2026-78669, CVE-2026-8609, CVE-2026-94440, CVE-2026-97031