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CVE-2026-33375

Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

6.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.45%Up 0.4 points since Mar 27, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.5

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.

Record
CVE-2026-33375
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
EUVDEUVD-2026-16351 6.5

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.

Record
EUVD-2026-16351
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-9vq6-r4xh-vm55 6.5

The Grafana MSSQL data source plugin contains a logic flaw that allows a low-privileged user ...

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.

Record
GHSA-9vq6-r4xh-vm55
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
NVD 6.5

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.

Record
CVE-2026-33375
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
OSVALPINE-CVE-2026-33375 6.5

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.

Record
ALPINE-CVE-2026-33375
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSV 6.5

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.

Record
CVE-2026-33375
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVBIT-grafana-2026-33375 No score

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.

Record
BIT-grafana-2026-33375
Updated
2026-11-02
OSVopenSUSE-SU-2026:10601-1 No score

grafana-11.6.14+security01-1.1 on GA media

These are all security issues fixed in the grafana-11.6.14+security01-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10601-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20940-1 No score

Security update for grafana

This update for grafana fixes the following issues:

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 server’s 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
Record
openSUSE-SU-2026:20940-1
Updated
2026-11-02
OSVSUSE-SU-2026:2243-1 No score

Security update 5.0.8 for Multi-Linux Manager Client Tools

This update fixes the following issues:

golang-github-QubitProducts-exporter_exporter:

  • Security Fixes:

    • CVE-2022-21698: Fixed denial of service using InstrumentHandlerCounter (bsc#1248707)

golang-github-prometheus-node_exporter:

  • Backward Compatibility and packaging changes:

    • Added compatibility for Go 1.22/1.23 needed in older RHEL toolchains
    • Pinned golang.org/x/net to v0.37.0 for Go 1.22 compatibility
  • Version 1.10.2:

    • Fixed typo in Zswap metric name (meminfo)
  • Version 1.10.1:

    • Fixed mount points being collected multiple times (filesystem)
    • Refactored mountinfo parsing (bsc#1261810)
    • Added Zswap/Zswapped metrics (meminfo)
  • Version 1.10.0:

    • New collectors: PCIe devices, swaps
    • Added systemd virtualization metrics, AIX metrics
    • WiFi packet metrics, additional PCIe and TLB metrics
    • Changed mdadm to use sysfs, added erofs to excluded filesystems
    • Fixed bugs: cpufreq collector, ethtool metrics

golang-github-prometheus-prometheus:

  • Security issues fixed:

    • CVE-2026-42151: AzureAD remote write: Fixed OAuth client_secret being exposed in plaintext via /-/config endpoint (bsc#1263986)
    • CVE-2026-42154: Remote-read: Reject snappy-compressed requests whose declared decoded length exceeds the decode limit (bsc#1263987).
    • CVE-2026-40179: UI: Fixed stored XSS via unescaped le label values in old UI heatmap chart tick labels (bsc#1262222)
    • CVE-2026-33186: Fixed authorization bypass due to improper validation of the HTTP/2 :path pseudo-header (bsc#1260267)
      • Bump google.golang.org/grpc to version 1.79.3
    • CVE-2026-27606: Fixed arbitrary file write via path traversal in rollup (bsc#1258893)
      • Bump rollup to version 4.59.0
  • Other changes:

    • Remote-Write: Reject snappy-compressed requests whose declared decoded length exceeds the decode limit.
    • Use systemd tmpfiles.d to create /var/lib/prometheus hierarchy (jsc#PED-14816)

prometheus-postgres_exporter:

  • Security Fixes:

    • CVE-2026-42154: Remote-read: Reject snappy-compressed requests whose declared decoded length exceeds the decode limit (bsc#1263987)
    • CVE-2026-42151: AzureAD remote write: Fixed OAuth client_secret being exposed in plaintext via /-/config endpoint (bsc#1263986)
    • CVE-2022-21698: Fixed denial of service using InstrumentHandlerCounter (bsc#1248699)
  • Highlights of other changes and bug fixes:

    • Use systemd tmpfiles.d to create /var/lib/prometheus hierarchy

grafana was updated from version 11.6.11 to 11.6.14+security01:

  • Security Fixes:

    • CVE-2026-34986: Fixed unrecoverable error in JWE decryption that could lead to a denial of service (bsc#1262950)
    • CVE-2026-41602: Fixed Integer Overflow or Wraparound vulnerability in Apache Thrift (bsc#1263501)
    • CVE-2026-26958: Ensure that MultiScalarMult properly handles initialization and produces correct results (bsc#1258595)
    • CVE-2026-21725: Fixed missing UID when deleting datasource by name (bsc#1258873)
    • CVE-2026-33375: Fixed denial of Service via out-of-memory exhaustion in MSSQL data source plugin (bsc#1260881)
    • CVE-2026-27876: Fixed remote arbitrary code execution via chained SQL Expressions (bsc#1261025)
    • CVE-2026-27877: Fixed information disclosure of data-source passwords via public dashboards (bsc#1261026)
    • CVE-2026-28375: Fixed denial of service via testdata data-source (bsc#1261029)
    • CVE-2026-27879: Fixed denial of service via resample query (bsc#1261027)
    • CVE-2026-33186: Fixed authorization bypass due to improper validation of the HTTP/2 :path pseudo-header (bsc#1260263)
    • CVE-2026-21724: Fixed authorization bypass allows modification of protected webhook URLs (bsc#1260878)
  • Highlights of other changes and bug fixes:

    • Version 11.6.13:

      • Wire the public dashboard service to the HTTP server
    • Version 11.6.12:

      • Update authentication redirect logic
      • Fixed single panel render with variable references

spacecmd:

  • Version…
Record
SUSE-SU-2026:2243-1
Updated
2026-11-02
OSVSUSE-SU-2026:2258-1 No score

Security update for grafana

This update for grafana to version to 11.6.14+security01 fixes the following issues:

  • Security Fixes:

    • CVE-2026-34986: Fixed unrecoverable error in JWE decryption that could lead to a denial of service (bsc#1262950)
    • CVE-2026-41602: Fixed Integer Overflow or Wraparound vulnerability in Apache Thrift (bsc#1263501)
    • CVE-2026-26958: Ensure that MultiScalarMult properly handles initialization and produces correct results (bsc#1258595)
    • CVE-2026-21725: Fixed missing UID when deleting datasource by name (bsc#1258873)
    • CVE-2026-33375: Fixed denial of Service via out-of-memory exhaustion in MSSQL data source plugin (bsc#1260881)
    • CVE-2026-27876: Fixed remote arbitrary code execution via chained SQL Expressions (bsc#1261025)
    • CVE-2026-27877: Fixed information disclosure of data-source passwords via public dashboards (bsc#1261026)
    • CVE-2026-28375: Fixed denial of service via testdata data-source (bsc#1261029)
    • CVE-2026-27879: Fixed denial of service via resample query (bsc#1261027)
    • CVE-2026-33186: Fixed authorization bypass due to improper validation of the HTTP/2 :path pseudo-header (bsc#1260263)
    • CVE-2026-21724: Fixed authorization bypass allows modification of protected webhook URLs (bsc#1260878)
  • Highlights of other changes and bug fixes:

    • Version 11.6.13:

      • Wire the public dashboard service to the HTTP server
    • Version 11.6.12:

      • Update authentication redirect logic
      • Fixed single panel render with variable references
Record
SUSE-SU-2026:2258-1
Updated
2026-11-02
OSVSUSE-SU-2026:2265-1 No score

Maintenance update for Multi-Linux Manager 4.3 Release Notes Release Notes

Maintenance update for Multi-Linux Manager 4.3 Release Notes Release Notes:

This is a codestream only update

Record
SUSE-SU-2026:2265-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
grafana
Alpine:v3.23
11.6.0 up to 12.2.8-r0
12.2.8-r0
grafana
Alpine:v3.24
11.6.0 up to 12.4.3-r0
12.4.3-r0
grafana
Bitnami
11.6.0 up to 11.6.14, 12.1.0 up to 12.1.10, 12.2.0 up to 12.2.8, 12.3.0 up to 12.3.6, 12.4.0 up to 12.4.2
11.6.1412.1.1012.2.812.3.612.4.2
grafana
openSUSE:Tumbleweed
before 11.6.14+security01-1.1
11.6.14+security01-1.1
grafana
openSUSE:Leap 16.0
before 11.6.14+security04-bp160.1.1
11.6.14+security04-bp160.1.1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-33375 is a medium vulnerability (CVSS 6.5) in Grafana, published March 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. Fixed in grafana 12.2.8-r0.

References

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Left out here: the rest of 1 source description. The JSON record has them.

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