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.
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
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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
grafanaAlpine:v3.23 |
11.6.0 up to 12.2.8-r0 | 12.2.8-r0 |
grafanaAlpine:v3.24 |
11.6.0 up to 12.4.3-r0 | 12.4.3-r0 |
grafanaBitnami |
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 |
grafanaopenSUSE:Tumbleweed |
before 11.6.14+security01-1.1 | 11.6.14+security01-1.1 |
grafanaopenSUSE:Leap 16.0 |
before 11.6.14+security04-bp160.1.1 | 11.6.14+security04-bp160.1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| first indexed | CVE 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
grafana.com/security/security-advisories/cve-2026-33375
nvd.nist.gov/vuln/detail/CVE-2026-33375
github.com/advisories/GHSA-9vq6-r4xh-vm55
security.alpinelinux.org/vuln/CVE-2026-33375
github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33375.json
suse.com/support/update/announcement/2026/suse-su-20262243-1
Show 74 moreShow less
bugzilla.suse.com/1248699
bugzilla.suse.com/1248707
bugzilla.suse.com/1252964
bugzilla.suse.com/1254619
bugzilla.suse.com/1257941
bugzilla.suse.com/1258595
bugzilla.suse.com/1258873
bugzilla.suse.com/1258893
bugzilla.suse.com/1258927
bugzilla.suse.com/1259208
bugzilla.suse.com/1259999
bugzilla.suse.com/1260263
bugzilla.suse.com/1260267
bugzilla.suse.com/1260878
bugzilla.suse.com/1260881
bugzilla.suse.com/1261025
bugzilla.suse.com/1261026
bugzilla.suse.com/1261027
bugzilla.suse.com/1261029
bugzilla.suse.com/1261810
bugzilla.suse.com/1262222
bugzilla.suse.com/1262950
bugzilla.suse.com/1263501
bugzilla.suse.com/1263986
bugzilla.suse.com/1263987
suse.com/security/cve/CVE-2022-21698
suse.com/security/cve/CVE-2025-29923
suse.com/security/cve/CVE-2026-21724
suse.com/security/cve/CVE-2026-21725
suse.com/security/cve/CVE-2026-26958
suse.com/security/cve/CVE-2026-27606
suse.com/security/cve/CVE-2026-27876
suse.com/security/cve/CVE-2026-27877
suse.com/security/cve/CVE-2026-27879
suse.com/security/cve/CVE-2026-28375
suse.com/security/cve/CVE-2026-33186
suse.com/security/cve/CVE-2026-33375
suse.com/security/cve/CVE-2026-34986
suse.com/security/cve/CVE-2026-40179
suse.com/security/cve/CVE-2026-41602
suse.com/security/cve/CVE-2026-42151
suse.com/security/cve/CVE-2026-42154
suse.com/support/update/announcement/2026/suse-su-20262258-1
suse.com/support/update/announcement/2026/suse-su-20262265-1
bugzilla.suse.com/1249675
bugzilla.suse.com/1259554
suse.com/security/cve/CVE-2026-31958
suse.com/security/cve/CVE-2026-21720
suse.com/security/cve/CVE-2026-21721
suse.com/security/cve/CVE-2026-21722
bugzilla.suse.com/1264764
bugzilla.suse.com/1265281
bugzilla.suse.com/1265282
bugzilla.suse.com/1265283
bugzilla.suse.com/1265284
bugzilla.suse.com/1265285
bugzilla.suse.com/1265286
bugzilla.suse.com/1265287
bugzilla.suse.com/1265288
bugzilla.suse.com/1265289
bugzilla.suse.com/1265290
bugzilla.suse.com/1266600
suse.com/security/cve/CVE-2025-30153
suse.com/security/cve/CVE-2026-28374
suse.com/security/cve/CVE-2026-28376
suse.com/security/cve/CVE-2026-28379
suse.com/security/cve/CVE-2026-28380
suse.com/security/cve/CVE-2026-28383
suse.com/security/cve/CVE-2026-33376
suse.com/security/cve/CVE-2026-33377
suse.com/security/cve/CVE-2026-33378
suse.com/security/cve/CVE-2026-33380
suse.com/security/cve/CVE-2026-33381
suse.com/security/cve/CVE-2026-39821
Left out here: the rest of 1 source description. The JSON record has them.