CVE-2026-28376: The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or str

Routine

MEDIUM 6.5UPGRADE

CVE-2026-28376 is a medium-severity flaw (CVSS 6.5) affecting grafana. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or streaming request body, potentially leading to out-of-memory conditions. An authenticated user with access to the Grafana Live API can trigger this issue.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-770
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): Grafana Labs · Vendor: grafana

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 20:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

grafana grafana UPGRADE

Affected: >= 8.0.0 and < 11.6.14 · >= 12.0.0 and < 12.2.8 · >= 12.3.0 and < 12.3.6 · >= 12.4.0 and < 12.4.3 · 11.6.14 · 11.6.14 security01 · 12.2.8 · 12.2.8 security01

Fixed in: 11.6.14, 12.2.8, 12.3.6, 12.4.3

Safe to downgrade to: a release before 8.0.0

1. Check installed version

apt-cache policy grafana || rpm -q grafana || grafana --version

2. UPGRADE to 11.6.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade grafana

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade grafana

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.0.0 (Debian / Ubuntu)

apt-cache madison grafana sudo apt install grafana=<VERSION_BEFORE_8.0.0> sudo apt-mark hold grafana

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list grafana sudo dnf downgrade grafana-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add grafana

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28376?

grafana: upgrade to 11.6.14, 12.2.8, 12.3.6, 12.4.3. Exact commands for each OS are on this page.

Is CVE-2026-28376 being exploited?

CVE-2026-28376 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28376 affect?

CVE-2026-28376 affects grafana. Severity is medium (CVSS 6.5). The Grafana Live push endpoint can be exploited to cause unbounded memory allocation by sending a large or streaming request body, potentially leading to out-of-memory conditions. An authenticated user with access to the Grafana Live API ca

How urgent is CVE-2026-28376?

Priority 29/100. No elevated risk signals yet.

Software pages

Grafana vulnerabilities

Related CVEs

CVE-2026-33376 HIGH 7.4 UPGRADE When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses
CVE-2026-28383 MEDIUM 6.5 UPGRADE A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire
CVE-2026-33378 MEDIUM 6.5 UPGRADE Using the $__timeGroup macro, one can achieve an OOM by overloading the server
CVE-2026-33380 MEDIUM 6.3 UPGRADE A vulnerability in SQL Expressions allows an authenticated attacker to read arbitrary files from the Grafana s
CVE-2026-33377 HIGH 7.1 UPGRADE An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard

References

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