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VulnerabilityPublished Updated

CVE-2026-33375: Grafana OSS · Uncontrolled Resource Consumption

Affects Grafana OSSSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium · fixed in 12.4.2 : update Grafana OSS when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 12.4.2, 12.3.6+security-01, 12.2.8+security-01 +2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
GrafanaGrafana OSSAffected
  • >=12.4.0 <12.4.2
Fixed in
  • 12.4.2
GrafanaGrafana OSSAffected
  • >=12.3.0 <12.3.6+security-01
Fixed in
  • 12.3.6+security-01
GrafanaGrafana OSSAffected
  • >=12.2.0 <12.2.8+security-01
Fixed in
  • 12.2.8+security-01
GrafanaGrafana OSSAffected
  • >=12.1.0 <12.1.10+security-01
Fixed in
  • 12.1.10+security-01
GrafanaGrafana OSSAffected
  • >=11.6.0 <11.6.14+security-01
Fixed in
  • 11.6.14+security-01

AI-suggested

If you cannot patch yet, consider restricting Viewer role permissions or limiting access to the MSSQL data source plugin to trusted users only.

Description

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.

References

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