When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here.

suse_linux SUSE-SU-2026:3718-1: SUSE SLES15 : Security update for grafana (Important) (SUSE-SU-2026:3718-1)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-58982 advisory.

    - Resolves RHEL-183803: CVE-2026-39821

Tenable has extracted the preceding description block directly from the Oracle 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.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-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 [rhel-9.8.z] (JIRA:Rocky Linux-242865)

    * Limit the size of the request body before processing it (JIRA:Rocky Linux-242866)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58982 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)

    Bug Fix(es) and Enhancement(s):

    * Avoid  unbounded memory growth [rhel-9.8.z] (JIRA:RHEL-242865)

    * Limit the size of the request body before processing it (JIRA:RHEL-242866)

    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.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54178 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)

    * 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)

    Bug Fix(es) and Enhancement(s):

    * [grafana / rhel-10.2.z] Remove Lua ExclusiveArch macro for Konflux build (JIRA:Rocky Linux-188282)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

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

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-54178 advisory.

    - Resolves RHEL-211020: CVE-2026-33377
    - Resolves RHEL-211376: CVE-2026-8609
    - Resolves RHEL-210981: CVE-2026-33376
    - Resolves RHEL-211389: CVE-2026-33382

Tenable has extracted the preceding description block directly from the Oracle 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.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54178 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)

    Bug Fix(es) and Enhancement(s):

    * [grafana / rhel-10.2.z] Remove Lua ExclusiveArch macro for Konflux build (JIRA:RHEL-188282)

    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.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20940-1 advisory.

    Changes in grafana:

    - CVE-2026-39821: Fix validation bypass and privilege escalation by       updating golang.org/x/net to version 0.55.0 (bsc#1266600)

    - Update to version 11.6.14+security-04:
      Security:
      * CVE-2026-28374: Fix insecure direct object reference in         Annotations API (bsc#1265290)
      * CVE-2026-28376: Fix unbounded memory allocation in Grafana Live         push endpoint (bsc#1265289)
      * CVE-2026-28383: Fix unbounded memory allocation in Grafana         plugin resources (bsc#1265286)
      * CVE-2026-28380: Fix broken access control in Snapshot API         (bsc#1265287)
      * CVE-2026-33376: Fix Auth Proxy IPv6 whitelist bypass         (bsc#1265285)
      * CVE-2026-28379: Fix viewer-triggered race condition in         Grafana Live (bsc#1265288)
      * CVE-2026-33377: Fix dashboard Editor Privilege Escalation         (bsc#1265284)
      * CVE-2026-33378: Fix OOM exception in Grafana Data Source Plugin         (bsc#1265283)
      * CVE-2026-33381: Prevent users from generating Service Account         tokens after permissions removal (bsc#1265281)
      * CVE-2026-33380: Fix vulnerability in SQL Expressions allowing         an authenticated attacker to read arbitrary files from the         Grafana servers filesystem (bsc#1265282)

    - CVE-2026-34986: Fix panic in JWE decryption (bsc#1262950)
    - CVE-2026-41602: Fix Integer Overflow or Wraparound vulnerability       in Apache Thrift (bsc#1263501)

    - CVE-2026-26958: Bump filippo.io/edwards25519 to version 1.1.1       (bsc#1258595)
    - CVE-2026-21725: Fix missing UID when deleting datasource by name       (bsc#1258873)

    - Update to version 11.6.14+security-01:
      Security:
      * CVE-2026-33375: Fix denial of Service via out-of-memory         exhaustion in MSSQL data source plugin (bsc#1260881)

    - Update to version 11.6.14:
      Security:
      * CVE-2026-27876: Fix remote arbitrary code execution via chained         SQL Expressions (bsc#1261025)
      * CVE-2026-27877: Fix information disclosure of data-source         passwords via public dashboards (bsc#1261026)
      * CVE-2026-28375: Fix denial of service via testdata data-source         (bsc#1261029)
      * CVE-2026-27879: Fix denial of service via resample query         (bsc#1261027)
      * CVE-2026-33186: Fix authorization bypass due to improper         validation of the HTTP/2 :path pseudo-header (bsc#1260263)
      * CVE-2026-21724: Fix authorization bypass allows modification of         protected webhook URLs (bsc#1260878)

    - Update to version 11.6.13:
      Enhancement:
      * Wire the public dashboard service to the HTTP server

    - Update to version 11.6.12:
      Enhancement:
      * Update authentication redirect logic       Bug fix:
      * Fix single panel render with variable references

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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

The version of Grafana Labs installed on the remote host is affected by multiple vulnerabilities, including:
  - A broken access control flaw in the Snapshot API allows any Editor to delete dashboard snapshots, even     those they have no read or write access to. (CVE-2026-28380)

  - When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses, allowing the     intended whitelist to be bypassed. (CVE-2026-33376)

  - Dashboard import overwrites the dashboard ACL, allowing an Editor to overwrite a dashboard not owned by     them and acquire admin on that specific dashboard. (CVE-2026-33377)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses     specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to     the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here. (CVE-2026-33376)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
339495	Oracle Linux 9 : grafana (ELSA-2026-58982)	Nessus	Oracle Linux Local Security Checks	Local	high
339419	RockyLinux 9 : grafana (RLSA-2026:58982)	Nessus	Rocky Linux Local Security Checks	Local	high
339154	RHEL 9 : grafana (RHSA-2026:58982)	Nessus	Red Hat Local Security Checks	Local	high
335184	RockyLinux 10 : grafana (RLSA-2026:54178)	Nessus	Rocky Linux Local Security Checks	Local	high
334989	Oracle Linux 10 : grafana (ELSA-2026-54178)	Nessus	Oracle Linux Local Security Checks	Local	high
334850	RHEL 10 : grafana (RHSA-2026:54178)	Nessus	Red Hat Local Security Checks	Local	high
321072	openSUSE 16 Security Update : grafana (openSUSE-SU-2026:20940-1)	Nessus	SuSE Local Security Checks	Local	medium
316482	Grafana Labs < 11.6.14+security-04 / 12.2.0 < 12.2.8+security-04 / 12.3.0 < 12.3.6+security-04 / 12.4.0 < 12.4.3+security-02 / 13.0.0 < 13.0.1+security-01 Multiple Vulnerabilities	Nessus	Web Servers	Remote	high
316392	Linux Distros Unpatched Vulnerability : CVE-2026-33376	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-33376

high

Tenable Plugins

Coming Soon

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medium

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