CVE-2020-1926: Timing attack in Cookie signature verification

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-16 · updated 2026-06-17
Weakness: CWE-208

Description

Apache Hive cookie signature verification used a non constant time comparison which is known to be vulnerable to timing attacks. This could allow recovery of another users cookie signature. The issue was addressed in Apache Hive 2.3.8

Affected products

Apache Software Foundation Apache Hive: before 2.3.8 — fixed in 2.3.8

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Hive 2.3.8. Check the vendor advisory for mitigations.

References

https://issues.apache.org/jira/browse/HIVE-22708
https://lists.apache.org/thread.html/rd186eedff68102ba1e68059a808101c5aa587e11542c7dcd26e7b9d7%40%3Cuser.hive.apache.org%3E
https://issues.apache.org/jira/browse/HIVE-22708
https://lists.apache.org/thread.html/rd186eedff68102ba1e68059a808101c5aa587e11542c7dcd26e7b9d7%40%3Cuser.hive.apache.org%3E

Get alerted when CVE-2020-1926 or the next vulnerability affects your stack