CVE-2020-15106: Etcd

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of a record is stored in the length field of a WAL file and no additional validation is done on this data. Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.

Affected products

• Etcd Etcd: before 3.3.23 (fixed in 3.3.23); from 3.4.0, before 3.4.10 (fixed in 3.4.10)
• Fedoraproject Fedora: version 32 only

Published 2020-08-05. Last modified 2026-06-17.