CVE-2026-44283: etcd is a distributed key-value store for the data of a distributed system

Routine

NONE 0.0REMOTEUPGRADE

CVE-2026-44283 is a none-severity flaw (CVSS 0.0) affecting etcd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to bypass RBAC authorization checks. An authenticated user without sufficient read or lease-related permissions may be able to access unauthorized data or attach leases by invoking transaction operations with these

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	0.0 (None)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-05-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: etcd

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-14 18:16 UTCPublished CVE record published
2026-06-17 10:50 UTCUpdated Record last modified

etcd etcd UPGRADE

Affected: < 3.4.44 · >= 3.5.0 and < 3.5.30 · >= 3.6.0 and < 3.6.11

Fixed in: 3.4.44, 3.5.30, 3.6.11

Safe to downgrade to: a release before 3.5.0

1. Check installed version

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

2. UPGRADE to 3.4.44 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade etcd

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 3.5.0 (Debian / Ubuntu)

apt-cache madison etcd sudo apt install etcd=<VERSION_BEFORE_3.5.0> sudo apt-mark hold etcd

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

dnf --showduplicates list etcd sudo dnf downgrade etcd-<VERSION_BEFORE_3.5.0> sudo dnf versionlock add etcd

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-2026-44283?

etcd: upgrade to 3.4.44, 3.5.30, 3.6.11. Exact commands for each OS are on this page.

Is CVE-2026-44283 being exploited?

CVE-2026-44283 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-2026-44283 affect?

CVE-2026-44283 affects etcd. Severity is none (CVSS 0.0). etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to by

How urgent is CVE-2026-44283?

Priority 8/100. Remotely exploitable, no login, no user action

Software pages

etcd vulnerabilities

Related CVEs

CVE-2026-59818 MEDIUM 6.5 UPGRADE etcd is a distributed key-value store for the data of a distributed system

References

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