CVE-2026-33375 | Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

The Grafana MSSQL data source plugin contains a logic flaw that allows a low-privileged user (Viewer) to bypass API restrictions and trigger a catastrophic Out-Of-Memory (OOM) memory exhaustion, crashing the host container.

Published: 2026-03-26 Last update: 2026-03-31 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-33375 is rated Low Risk (26.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-33375

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-27 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-33375

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2026-33375

OS Trackers for CVE-2026-33375

vendor priority summary link
alpine — CVE-2026-33375: 1 source package rows (grafana); 19 state rows across 2 repos (3.23-community, edge-community); fixed 0, open 19. https://security.alpinelinux.org/vuln/CVE-2026-33375
redhat medium — https://access.redhat.com/security/cve/CVE-2026-33375
suse medium — https://www.suse.com/security/cve/CVE-2026-33375/

Affected software / configurations for CVE-2026-33375

Vendor Product Version Raw CPE
grafana grafana >= 11.6.0, < 11.6.14 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.1.0, < 12.1.10 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.2.0, < 12.2.8 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.3.0, < 12.3.6 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.4.0, < 12.4.2 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*

References for CVE-2026-33375

cvelogic Threat Intelligence