Grafana OSS and Grafana Enterprise did not safely resolve symbolic links when extracting plugin archives. A crafted plugin archive can chain relative symbolic link entries to escape the plugin installation directory, writing arbitrary files and an executable backend binary outside that directory. The dropped executable runs with the privileges of the Grafana server process, resulting in remote code execution. Plugin archives are extracted before their signature is verified, so a valid plugin signature does not prevent the write. An operator can therefore be affected by installing a plugin that appears legitimate, as well as by installing a plugin from an arbitrary archive using grafana-cli, the GF_INSTALL_PLUGINS environment variable, or preinstall configuration. Grafana Enterprise is affected because it includes the same plugin extraction code as Grafana OSS.

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:83544 advisory.

    * grafana: PLUGIN ARCHIVE EXTRACTION ESCAPES THE PLUGIN DIRECTORY, ALLOWING CODE EXECUTION     (CVE-2026-15815)

Tenable has extracted the preceding description block directly from the RockyLinux 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 remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-83544 advisory.

    - Fixes CVE-2024-1442 Add email verification when updating user email [Orabug: 38550520]
    - CVE-2026-15815 grafana: PLUGIN ARCHIVE EXTRACTION ESCAPES THE PLUGIN DIRECTORY, ALLOWING CODE EXECUTION
    - CVE-2026-42504 grafana: Golang MIME: Denial of Service via maliciously-crafted MIME header [rhel-9.8.z]

Tenable has extracted the preceding description block directly from the Oracle Linux 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 remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:83544 advisory.

    Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB &     OpenTSDB.

    Security Fix(es):

    * grafana: PLUGIN ARCHIVE EXTRACTION ESCAPES THE PLUGIN DIRECTORY, ALLOWING CODE EXECUTION     (CVE-2026-15815)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:83544 advisory.

    * grafana: PLUGIN ARCHIVE EXTRACTION ESCAPES THE PLUGIN DIRECTORY, ALLOWING CODE EXECUTION     (CVE-2026-15815)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:1054 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-93450:
    go-openapi/swag jsonutils before 0.27.1 contains a stack overflow vulnerability in ordered JSON parsing     and serialization due to unbounded recursion with no depth limit. Remote unauthenticated attackers can     submit deeply nested JSON documents to services accepting OpenAPI specifications, causing fatal stack     overflow that terminates the process and all in-flight requests.

    CVE-2026-15815:
    Grafana OSS and Grafana Enterprise did not safely resolve symbolic links when extracting plugin archives.
    A crafted plugin archive can chain relative symbolic link entries to escape the plugin installation     directory, writing arbitrary files and an executable backend binary outside that directory. The dropped     executable runs with the privileges of the Grafana server process, resulting in remote code execution.
    Plugin archives are extracted before their signature is verified, so a valid plugin signature does not     prevent the write.

Tenable has extracted the preceding description block directly from the Tencent 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Grafana OSS and Grafana Enterprise did not safely resolve symbolic links when extracting plugin archives.
    A crafted plugin archive can chain relative symbolic link entries to escape the plugin installation     directory, writing arbitrary files and an executable backend binary outside that directory. The dropped     executable runs with the privileges of the Grafana server process, resulting in remote code execution.
    Plugin archives are extracted before their signature is verified, so a valid plugin signature does not     prevent the write. An operator can therefore be affected by installing a plugin that appears legitimate,     as well as by installing a plugin from an arbitrary archive using grafana-cli, the GF_INSTALL_PLUGINS     environment variable, or preinstall configuration. Grafana Enterprise is affected because it includes the     same plugin extraction code as Grafana OSS. (CVE-2026-15815)

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

ID	Name	Product	Family	Type	Severity
366492	RockyLinux 8 : grafana (RLSA-2026:83544)	Nessus	Rocky Linux Local Security Checks	Local	high
366311	Oracle Linux 8 : grafana (ELSA-2026-83544)	Nessus	Oracle Linux Local Security Checks	Local	high
366225	RHEL 8 : grafana (RHSA-2026:83544)	Nessus	Red Hat Local Security Checks	Local	high
366105	AlmaLinux 8 : grafana (ALSA-2026:83544)	Nessus	Alma Linux Local Security Checks	Local	high
353448	TencentOS Server 4: grafana (TSSA-2026:1054)	Nessus	Tencent Local Security Checks	Local	high
353332	Linux Distros Unpatched Vulnerability : CVE-2026-15815	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-15815

high

Tenable Plugins

high

high

high

high

high

high