4.3

CVE-2026-44283: etcd-io etcd Incorrect Authorization

CVSS: 4.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-44283DEBIAN-CVE-2026-44283CGA-2g45-rph7-6r8w
Published 14-05-2026Last modified 16-05-2026
Open JSON

Vulnerability summary

CVE-2026-44283 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in etcd-io etcd. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.6% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.27%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
OPENSUSE-SU-2026:21551-1RHSA-2026:44868SUSE-SU-2026:23216-1SUSE-SU-2026:23227-1CGA-WJGX-PJRX-8CJV

Timeline

  1. 14-05-2026
    PublishedVulnerability first disclosed.
  2. 16-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

+0.05 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.27%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard50 products
  • dapr-scheduler-1.14< 1.14.5-r32
  • dapr-scheduler-1.15< 1.15.14-r13
  • dapr-scheduler-1.16< 1.16.17-r2
  • dapr-scheduler-1.17< 1.17.11-r2
  • dapr-scheduler-1.18< 1.18.2-r3
Wolfi13 products
  • dapr-scheduler-1.16< 1.16.17-r2
  • dapr-scheduler-1.17< 1.17.11-r2
  • dockerd-28All versions (No fix recorded)
  • dockerd-29All versions (No fix recorded)
  • juicefs-1.3< 1.3.1-r22
Debian1 product
  • etcdAll versions (No fix recorded) | < 3.5.16-11
Etcd1 product
  • etcd< 3.4.44 | ≥ 3.5.0, < 3.5.30 | ≥ 3.6.0, < 3.6.11
Etcd-io1 product
  • etcd< 3.4.44 | ≥ 3.5.0, ≤ 3.5.29 | ≥ 3.6.0, ≤ 3.6.10
Go.etcd.io1 product
  • etcd< 3.4.44
Go.etcd.io/etcd1 product
  • v3≥ 3.6.0, < 3.6.11 | ≥ 3.5.0, < 3.5.30
Go.etcd.io/etcd/server1 product
  • v3≥ 3.6.0, < 3.6.11
Opensuse1 product
  • flannel&distro=openSUSE Tumbleweed< 0.28.5-1.1
Ubuntu1 product
  • etcdAll versions (No fix recorded)

10 vendors · 71 products

References

8 links