CVE Catalog

CVE-2026-54635

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

35th percentile - higher than 35% of all known CVEs

Summary

In the Python SDK pytonapi versions 2.0.0 to 2.2.0, TonapiWebhookDispatcher fails to validate the Authorization header when a webhook handler is registered with a custom path. An unauthenticated remote attacker can POST forged payloads to the custom webhook endpoint and trigger victim-defined handlers.

Risk Assessment

An attacker can trigger arbitrary functions defined as webhook handlers, potentially leading to unauthorized actions in the application using TONAPI.

Recommendation

Update pytonapi to version 2.2.1 or later.

Related vulnerabilities

Original NVD description (English source)

pytonapi is a Python SDK for TONAPI that provides REST API, streaming, and webhook access to the TON blockchain. From 2.0.0 to 2.2.0, TonapiWebhookDispatcher fails to validate the Authorization header when a webhook handler is registered with the documented path argument, because setup() stores bearer tokens only under the default suffix paths and never adds the custom path to the token map, so self._tokens.get(path) returns None and the authentication guard is skipped. An unauthenticated remote attacker can POST forged payloads to the custom webhook endpoint and trigger victim-defined handlers. This issue is fixed in version 2.2.1.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS