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TI-2026-32254 Aliases CVE-2026-44283GHSA-x35m-3gp4-4fh5

etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks

Priority LOW 25CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Partial Red Hat: 1 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00225 13th percentileScored 2026-11-07
Fix Partial etcd (etcd-io): 3.4.44go.etcd.io/etcd/v3 (Go): 3.6.11, 3.5.30+1 more productRed Hat: 1 advisoryRed Hat: 1 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
etcd-ioetcdbefore 3.4.44; 3.5.0 – 3.5.29; 3.6.0 – 3.6.103.4.44Patch availableCNA
—go.etcd.io/etcd/v3 (Go)3.6.0 to before 3.6.113.6.11Patch availableGHSA-x35m-3gp4-4fh5
—go.etcd.io/etcd/v3 (Go)3.5.0 to before 3.5.303.5.30Patch availableGHSA-x35m-3gp4-4fh5
—go.etcd.io/etcd (Go)before 3.4.443.4.44Patch availableGHSA-x35m-3gp4-4fh5
  • etcd Vendoretcd-io Affected before 3.4.44; 3.5.0 – 3.5.29; 3.6.0 – 3.6.10 Fixed in 3.4.44 Patch available CNA
  • go.etcd.io/etcd/v3 (Go) Vendor— Affected 3.6.0 to before 3.6.11 Fixed in 3.6.11 Patch available GHSA-x35m-3gp4-4fh5
  • go.etcd.io/etcd/v3 (Go) Vendor— Affected 3.5.0 to before 3.5.30 Fixed in 3.5.30 Patch available GHSA-x35m-3gp4-4fh5
  • go.etcd.io/etcd (Go) Vendor— Affected before 3.4.44 Fixed in 3.4.44 Patch available GHSA-x35m-3gp4-4fh5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*before 3.4.44; 3.5.0 to before 3.5.30; 3.6.0 to before 3.6.11Vulnerableetcd-io
  • cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:* Versions before 3.4.44; 3.5.0 to before 3.5.30; 3.6.0 to before 3.6.11 Vulnerable ·etcd-io

Remediation

  • Fix · CNA etcd (etcd-io) Fixed in 3.4.44
  • Fix · GHSA-x35m-3gp4-4fh5 go.etcd.io/etcd/v3 (Go) Fixed in 3.6.11 Advisory →
  • Fix · GHSA-x35m-3gp4-4fh5 go.etcd.io/etcd/v3 (Go) Fixed in 3.5.30 Advisory →
  • Fix · GHSA-x35m-3gp4-4fh5 go.etcd.io/etcd (Go) Fixed in 3.4.44 Advisory →

Red Hat 1 advisory

  • RHSA-2026:44868 Released 2026-07-24 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images etcd-3.7.1-0.1.hum1@aarch64, etcd-3.7.1-0.1.hum1@src, etcd-3.7.1-0.1.hum1@x86_64

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenStack Platform 16.2AffectedNo fix yet: Fix deferred
Red Hat OpenStack Platform 17.1AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:44868

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44283
  2. 2026-10-03 Alias added: GHSA-x35m-3gp4-4fh5

References

Advisory 2

Other 1

  • TI-2021-09444 Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to… CVSS 3.1CRITICAL 9.8
  • TI-2026-25810 etcd: Authorization bypasses in multiple APIs CVSS 4.0HIGH 8.8
  • TI-2022-15016 Etcd v3.5.4 allows remote attackers to cause a denial of service via function… CVSS 3.1HIGH 7.5
  • TI-2018-12096 Improper authentication in etcd: CVSS 3.1HIGH 8.1
  • TI-2026-42635 etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation CVSS 3.1HIGH 8.1
  • TI-2026-25749 etcd: Nested etcd transactions bypass RBAC authorization checks CVSS 3.1MEDIUM 6.5
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences