Debian 11 — libplack-middleware-session-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2013-10031 CVE-2014-125112 CVE-2025-40923 Upstream summary: Plack-Middleware-Session versions before 0.17 may be vulnerable to HMAC comparison timing attacks Table of contents Symptom & Impact Environment & Reproduction Root Cause […]