0x5t — Security Research https://0x5t.raptx.org/ 2026-02-06T00:00:00Z 0x5t Vulnerability research and CVE writeups. CVE-2026-25635: Calibre CHM Path Traversal to RCE https://0x5t.raptx.org/posts/calibre-chm-rce.html 2026-02-06T00:00:00Z Path traversal vulnerability in Calibre 9.1.0's CHM reader allows arbitrary file writes and code execution by dropping payloads into the Windows Startup folder. CVE-2026-25636: Calibre EPUB Path Traversal to RCE https://0x5t.raptx.org/posts/calibre-epub-rce.html 2026-02-06T00:00:00Z Path traversal vulnerability in Calibre 9.1.0's EPUB conversion allows arbitrary file corruption and code execution via malicious ebook files.