CVE-2026-54635

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Source
https://cve.org/CVERecord?id=CVE-2026-54635
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54635.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54635
Aliases
Published
2026-07-28T17:09:08.372Z
Modified
2026-07-30T04:02:21.286773346Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
pytonapi has a Webhook Custom Path Authentication Bypass
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54635.json",
    "cwe_ids": [
        "CWE-287"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/nessshon/tonapi

Affected ranges

Type
GIT
Repo
https://github.com/nessshon/tonapi
Events
Introduced
eeef22c870e0e07546e2b84573119b7b28fcc61e
Fixed
854222b7ee68d3fb7b4d6d899d200f388483bd86
Fixed
4c6864ae124d19817fe7c0c24683e942c51a0600
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.0.0"
        },
        {
            "fixed": "2.2.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v2.*
v2.0.0
v2.0.1
v2.0.2
v2.1.0
v2.2.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54635.json"