Wednesday, 4 November 2026
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Praktor path traversal allows instruction injection via Telegram uploads

A path traversal vulnerability in Praktor's Telegram bot integration allows remote users to write files outside the uploads directory and inject malicious instructions into Claude agent workspaces. The vulnerability affects versions through v0.9.0 and is patched in v0.9.1.

Disclosed 3 November 2026 · Record updated 3 November 2026

Impact

Remote attackers can escape the uploads directory and write arbitrary files to agent workspace volumes, including agent instruction files, enabling stored instruction injection attacks on Claude agents.

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Sources

  1. github.comhttps://github.com/advisories/GHSA-48v2-6jcm-fc99