A testdata data-source can be used to trigger out-of-memory crashes in Grafana.

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1785766306 advisory.

  - A resample query can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-27879)

  - A testdata data-source can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-28375)

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

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785563141 advisory.

  - A user with Viewer permissions can use specially crafted requests to the Tempo and Loki data source     plugins to reach unintended backend endpoints. Depending on the backend configuration this can expose data     source credentials, leak internal responses, or trigger administrative actions on the configured backend.
    (CVE-2026-10601)

  - Public dashboards with annotations enabled did not limit their annotation timerange to the locked     timerange of the public dashboard. This means one could read the entire history of annotations visible on     the specific dashboard, even those outside the locked timerange. This did not leak any annotations that     would not otherwise be visible on the public dashboard. (CVE-2026-21722)

  - A resample query can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-27879)

  - A testdata data-source can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-28375)

  - The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or     streaming request body, potentially leading to out-of-memory conditions. An authenticated user with access     to the Grafana Live API can trigger this issue. (CVE-2026-28376)

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

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785563141 advisory.

  - A user with Viewer permissions can use specially crafted requests to the Tempo and Loki data source     plugins to reach unintended backend endpoints. Depending on the backend configuration this can expose data     source credentials, leak internal responses, or trigger administrative actions on the configured backend.
    (CVE-2026-10601)

  - Public dashboards with annotations enabled did not limit their annotation timerange to the locked     timerange of the public dashboard. This means one could read the entire history of annotations visible on     the specific dashboard, even those outside the locked timerange. This did not leak any annotations that     would not otherwise be visible on the public dashboard. (CVE-2026-21722)

  - A resample query can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-27879)

  - A testdata data-source can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-28375)

  - The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or     streaming request body, potentially leading to out-of-memory conditions. An authenticated user with access     to the Grafana Live API can trigger this issue. (CVE-2026-28376)

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 FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 62717c0f-5901-11f1-b525-3c7c3fba4204 advisory.

    https://grafana.com/security/security-advisories/cve-2026-28375 reports:
    A testdata data-source can be used to trigger out-of-memory crashes in Grafana.

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

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

The version of Grafana installed on the remote host is 8.1.x through 11.6.x prior to 11.6.14, 12.0.x through 12.1.x prior to 12.1.10, 12.2.x prior to 12.2.8, 12.3.x prior to 12.3.6, or 12.4.x prior to 12.4.2. It is, therefore, affected by a denial of service vulnerability:

  - A testdata data-source can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-28375)

Note that Nessus has not tested for this issue 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.

  - A testdata data-source can be used to trigger out-of-memory crashes in Grafana. (CVE-2026-28375)

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

ID	Name	Product	Family	Type	Severity
361548	AlmaLinux 9.2 [TuxCare] Security Update: grafana Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1785766306)	Nessus	Alma Linux Local Security Checks	Local	medium
353161	Rocky Linux 9.6 [TuxCare] Security Update: grafana / grafana-selinux Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1785563141)	Nessus	Rocky Linux Local Security Checks	Local	high
352462	AlmaLinux 9.6 [TuxCare] Security Update: grafana / grafana-selinux Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1785563141)	Nessus	Alma Linux Local Security Checks	Local	high
321072	openSUSE 16 Security Update : grafana (openSUSE-SU-2026:20940-1)	Nessus	SuSE Local Security Checks	Local	medium
317070	FreeBSD : Grafana -- Grafana Testdata datasource can issue unbounded memory allocations (62717c0f-5901-11f1-b525-3c7c3fba4204)	Nessus	FreeBSD Local Security Checks	Local	medium
304689	Grafana 8.1.0 < 11.6.14 / 12.0.0 < 12.1.10 / 12.2.0 < 12.2.8 / 12.3.0 < 12.3.6 / 12.4.0 < 12.4.2 DoS (CVE-2026-28375)	Nessus	Web Servers	Remote	medium
304097	Linux Distros Unpatched Vulnerability : CVE-2026-28375	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-28375

medium

Tenable Plugins

medium

high

high

medium

medium

medium

medium