CVE-2022-31553: Sleep Learner Project Sleep Learner

Critical severity, CVSS 9.3. EPSS: 1.3% chance of exploitation in the next 30 days.

The rainsoupah/sleep-learner repository through 2021-02-21 on GitHub allows absolute path traversal because the Flask send_file function is used unsafely.

Affected products

• Sleep Learner Project Sleep Learner: up to and including 2021-02-21

Published 2022-07-11. Last modified 2026-06-17.