CVE-2025-30160: Redlib

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Redlib is an alternative private front-end to Reddit. A vulnerability has been identified in Redlib where an attacker can cause a denial-of-service (DOS) condition by submitting a specially crafted base2048-encoded DEFLATE decompression bomb to the restore_preferences form. This leads to excessive memory consumption and potential system instability, which can be exploited to disrupt Redlib instances. This vulnerability is fixed in 0.36.0.

Affected products

• Redlib Redlib: before 0.36.0 (fixed in 0.36.0)

Published 2025-03-20. Last modified 2026-06-17.