CVE-2026-33380Network attack vector

File disclosure via incomplete SQL AST validation

Published May 13, 2026 · Updated May 13, 2026

SQL expression validation in affected Grafana OSS releases allows remote authenticated users to read arbitrary files from the server. The AllowQuery parser walks an incomplete SQL abstract syntax tree, so functions hidden in skipped ORDER BY, WITH, LIMIT, or WINDOW fields bypass its allowlist. The attack requires a signed-in account and an instance with the sqlExpressions feature toggle enabled; disclosed impact is file confidentiality only.

CVSS severity6.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SQL expression validation in affected Grafana OSS releases allows remote authenticated users to read arbitrary files from the server. The AllowQuery parser walks an incomplete SQL abstract syntax tree, so functions hidden in skipped ORDER BY, WITH, LIMIT, or WINDOW fields bypass its allowlist. The attack requires a signed-in account and an instance with the sqlExpressions feature toggle enabled; disclosed impact is file confidentiality only.

The record

CVE
CVE-2026-33380
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Grafana Labs
Product
Grafana OSS
Classifications
CWE-552, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.6.0 <=11.6.14
  2. Affected versionversion=11.6.14 <11.6.14+security-04
  3. Affected versionversion=12.0.0 <=12.2.8
  4. Affected versionversion=12.2.8 <12.2.8+security-04
  5. Affected versionversion=12.3.0 <=12.3.6
  6. Affected versionversion=12.3.6 <12.3.6+security-04
  7. Affected versionversion=12.4.0 <=12.4.3
  8. Affected versionversion=12.4.3 <12.4.3+security-02
  9. Affected versionversion=13.0.0 <=13.0.1
  10. Affected versionversion=13.0.1 <13.0.1+security-01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grafana Labs · Grafana OSSversion=11.6.0 <=11.6.14; version=11.6.14 <11.6.14+security-04; version=12.0.0 <=12.2.8; version=12.2.8 <12.2.8+security-04; version=12.3.0 <=12.3.6; version=12.3.6 <12.3.6+security-04; version=12.4.0 <=12.4.3; version=12.4.3 <12.4.3+security-02; version=13.0.0 <=13.0.1; version=13.0.1 <13.0.1+security-01

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.3Grafana LabsCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo