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Vulnerability record · CVE-2026-70646 · published 6 August 2026

CVE-2026-70646: Uncontrolled resource consumption vulnerability

aiosend is a synchronous and asynchronous Crypto Pay API client. Pror to version 3.0.7, `WebhookHandler.feed_update()` deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption. Version 3.0.7 fixes the issue. Some workarounds are available. Restrict request body size at the reverse proxy or web framework, rate-limit webhook endpoints, and/or reject oversized requests before JSON parsing.

7.5 CVSS 3.1 High EPSS 0.64% · top 51.6% CWE-400 · Uncontrolled resource consumption Deferred
7.5CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
18 Sep 2026Last modified by NVD

Description

aiosend is a synchronous and asynchronous Crypto Pay API client. Pror to version 3.0.7, `WebhookHandler.feed_update()` deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption. Version 3.0.7 fixes the issue. Some workarounds are available. Restrict request body size at the reverse proxy or web framework, rate-limit webhook endpoints, and/or reject oversized requests before JSON parsing.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://github.com/vovchic17/aiosend/commit/db20f0a742209dfac181863d398ec5112687efa4
https://github.com/vovchic17/aiosend/releases/tag/v3.0.7
https://github.com/vovchic17/aiosend/security/advisories/GHSA-7m8f-hgjq-8gc9

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Source: NIST National Vulnerability Database (record CVE-2026-70646), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.