What’s Vulnerable › Vulnerabilities

CVE-2023-32082: etcd key name can be accessed via LeaseTimeToLive API

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-11 · updated 2026-06-17
• Weakness: CWE-200

Description

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.26 and 3.5.9, the LeaseTimeToLive API allows access to key names (not value) associated to a lease when `Keys` parameter is true, even a user doesn't have read permission to the keys. The impact is limited to a cluster which enables auth (RBAC). Versions 3.4.26 and 3.5.9 fix this issue. There are no known workarounds.

Affected products

• etcd-io etcd: before 3.4.26; from 3.5.0 before 3.5.9 — fixed in 3.4.26, 3.5.9

How to fix

Upgrade to a fixed version: etcd-io etcd 3.4.26, 3.5.9. Check the vendor advisory for mitigations.

References

• https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.4.md
• https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md
• https://github.com/etcd-io/etcd/pull/15656
• https://github.com/etcd-io/etcd/security/advisories/GHSA-3p4g-rcw5-8298
• https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.4.md
• https://github.com/etcd-io/etcd/blob/main/CHANGELOG/CHANGELOG-3.5.md
• https://github.com/etcd-io/etcd/pull/15656
• https://github.com/etcd-io/etcd/security/advisories/GHSA-3p4g-rcw5-8298

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