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No exploitation reportedFix available

CVE-2026-44283

No exploitation reported by the sources we read.

  • Published2026-05-14
  • Fixed in3.6.11 · 3.5.30 · 3.4.44
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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 features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.

Timeline

dates in UTC
  1. 2026-05-1418:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-44283?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-44283?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Etcd
BranchAffectedFixed in
3.6≥ 3.6.0, < 3.6.113.6.11
3.5≥ 3.5.0, < 3.5.303.5.30
3.4< 3.4.443.4.44

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-44283 Red Hat Product Security3 products fixed · 7 known affected

    etcd: etcd: Authenticated user can bypass RBAC for unauthorized data access

    openshift4/ose-etcd-rhel9 as a component of Red Hat OpenShift Container Platform 4 · etcd as a component of Red Hat OpenStack Platform 16.2 · etcd.src as a component of Red Hat OpenStack Platform 16.2 · +4 more

  • RHSA-2026:44868 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Full record on NVD

Fix

  1. Update Etcd to 3.6.11 · 3.5.30 · 3.4.44
  2. Vendor fix Red Hat Product Security RHSA-2026:44868 · 3 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  3. Workaround from the vendor Red Hat Product Security RHSA-2026:44868 · 3 productsFor OpenShift Container Platform until an update can be applied, reduce exposure by restricting network access to etcd server ports so only trusted control-plane components can connect and require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate dis…
  4. No fix available, says the vendor Red Hat Product Security CVE-2026-44283 · 4 productsFix deferred
  5. No fix available, says the vendor Red Hat Product Security CVE-2026-44283 · 1 productAffected
  6. No fix planned, says the vendor Red Hat Product Security CVE-2026-44283 · 2 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Published
2026-05-14
Last Modified
2026-06-17
NVD status
Analyzed
MSRC Title
etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks

Frequently asked questions

What is CVE-2026-44283?

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 features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.

Is CVE-2026-44283 actively exploited?

Active exploitation of CVE-2026-44283 has not been confirmed. Its EPSS score was 0.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-44283?

CVE-2026-44283 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

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