CVE-2026-62331

praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled document filename into a destination path without sanitization, and `path.Join` collapses parent-directory traversal. A remote Telegram user who can message the bot can therefore write outside `uploads/` within the persistent agent workspace mounted at `/workspace/agent`. Because `allow_from: []` permits all senders by default, no prior authentication or privilege is required in that configuration. The attacker can plant or overwrite `CLAUDE.md`, instruction, skill, hook, or configuration files that the Claude agent reads and operates on across later runs, turning a document upload into stored instruction injection. The demonstrated arbitrary-write scope is the persistent agent workspace volume, not an unrestricted host-filesystem write. This issue is fixed in version 0.9.1.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141
https://github.com/mtzanidakis/praktor/pull/228
https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1
https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99

Configurations

No configuration.

History

30 Oct 2026, 19:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 19:18

Updated : 2026-10-30 20:17

NVD link : CVE-2026-62331

Mitre link : CVE-2026-62331

CVE.ORG link : CVE-2026-62331

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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