Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1310 CNY

100%
Buy Us a Coffee

CVE-2026-25731 PoC — Calibre Affected by Arbitrary Code Execution via Server-Side Template Injection in Calibre HTML Export

Source
https://github.com/dxlerYT/CVE-2026-25731
Associated Vulnerability
Title:Calibre Affected by Arbitrary Code Execution via Server-Side Template Injection in Calibre HTML Export (CVE-2026-25731)
Description:calibre is an e-book manager. Prior to 9.2.0, a Server-Side Template Injection (SSTI) vulnerability in Calibre's Templite templating engine allows arbitrary code execution when a user converts an ebook using a malicious custom template file via the --template-html or --template-html-index command-line options. This vulnerability is fixed in 9.2.0.
Description
Proof of Concept for a Server-Side Template Injection (SSTI) vulnerability in Calibre’s Templite engine (GHSA-xrh9-w7qx-3gcc). Demonstrates arbitrary Python code execution via user-supplied HTML export templates in affected versions (≤ 9.1.0).
File Snapshot

Log in to view the POC file snapshot cached by Shenlong Bot

Log in to view
Remarks
    1. It is advised to access via the original source first.
    2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.
    3. Mirroring, verifying, and maintaining this POC archive takes ongoing effort, so local snapshots are a paid feature. Your subscription keeps the archive online — thank you for the support. View subscription plans →