CVE-2026-86258

nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.canshow that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual prefi...

PT-2026-86528

nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can show that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual...