CVE-2026-33378

medium

Published 2026-05-13 · Modified 2026-05-28

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CVSS v3

6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.5

Description

Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Application impact

Vendor	Product	Versions	Fixed
grafana	grafana	`{"startIncluding":"8.0.0","endExcluding":"11.6.14"}`	`11.6.14`
grafana	grafana	`{"startIncluding":"12.0.0","endExcluding":"12.2.8"}`	`12.2.8`
grafana	grafana	`{"startIncluding":"12.3.0","endExcluding":"12.3.6"}`	`12.3.6`
grafana	grafana	`{"startIncluding":"12.4.0","endExcluding":"12.4.3"}`	`12.4.3`
grafana	grafana	`11.6.14`
grafana	grafana	`12.2.8`
grafana	grafana	`12.3.6`
grafana	grafana	`12.4.3`
grafana	grafana	`13.0.0`
grafana	grafana	`13.0.1`

References

CWEs

CWE-400

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.