CVE-2026-54635
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.
- CVSS 3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-25)
- CWE
- CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3fcr-jvgp-7f58 | PyPI | pytonapi | >=2.0.0 <2.2.1 | 2.2.1 |
| PYSEC-2026-3614 | PyPI | pytonapi | >=2.0.0 <2.2.1 | 2.2.1 |
References
- https://github.com/nessshon/tonapi/commit/854222b7ee68d3fb7b4d6d899d200f388483bd86
- https://github.com/nessshon/tonapi/releases/tag/v2.2.1
- https://github.com/nessshon/tonapi/security/advisories/GHSA-3fcr-jvgp-7f58
- https://github.com/pypa/advisory-database/tree/main/vulns/pytonapi/PYSEC-2026-3614.yaml
- https://github.com/nessshon/tonapi/security/advisories/GHSA-3fcr-jvgp-7f58