Improper Authentication Affecting pytonapi package, versions [2.0.0,2.2.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-PYTONAPI-18508001
- published2 Aug 2026
- disclosed28 Jul 2026
- creditUnknown
Introduced: 28 Jul 2026
NewCVE-2026-54635 (opens in a new tab)How to fix?
Upgrade pytonapi to version 2.2.1 or higher.
Overview
pytonapi is a Python SDK for TONAPI — REST API, streaming, and webhooks for TON blockchain.
Affected versions of this package are vulnerable to Improper Authentication in the TonapiWebhookDispatcher process when a webhook handler is registered with a custom path argument. An attacker can trigger victim-defined handlers with attacker-controlled data by sending POST requests to the custom webhook endpoint without providing a valid Authorization header, thereby bypassing authentication and potentially causing unauthorized actions to be executed.