CVE-2026-93479: nginx Heap Overflow in map Regex pajus @published 2026-10-15 · 5 min read CVE-2026-93479 nginx heap buffer overflow (CVSS 4.0 9.2) in string expression evaluation. Fixed in 1.31.7 and 1.30.6; Debian 13 has no fix yet. Read more about CVE-2026-93479: nginx Heap Overflow in map Regex
pajus @published 2026-10-02 · 11 min read Certbot on Debian 13: Renewals for 45-Day Certs Automate Let's Encrypt on Debian 13 with certbot: timer, nginx deploy hook, OnFailure alerts, expiry checks and prep for 64- and 45-day certificates. Tags Nginx systemd Debian Server Administration TLS
pajus @published 2026-10-01 · 11 min read nginx 502 Bad Gateway with PHP-FPM on Debian 13 Fix nginx 502 Bad Gateway with PHP-FPM 8.4 on Debian 13: map errno 13, 2, 111 and 110 in error.log to their cause, with namei, ss and cgi-fcgi checks. Tags Nginx PHP Troubleshooting Debian Server Administration
pajus @published 2026-09-24 · 10 min read Sandboxing systemd Services on Debian 13 Sandbox systemd services on Debian 13: score units with systemd-analyze security, harden nginx via a systemd drop-in, then debug whatever breaks. Tags Linux Security Server Hardening Debian systemd Nginx