CVE-2023-43116: Buildkite Elastic Ci Stack

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A symbolic link following vulnerability in Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5 allows the buildkite-agent user to change ownership of arbitrary directories via the PIPELINE_PATH variable in the fix-buildkite-agent-builds-permissions script.

Affected products

• Buildkite Elastic Ci Stack: before 5.22.5 (fixed in 5.22.5); from 6.0.0, before 6.7.1 (fixed in 6.7.1)

Published 2023-12-22. Last modified 2026-06-17.