CVE-2026-70646

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

May 22, 2026

Last Modified

August 8, 2026

Advisory Details (3)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler · Advisory · vovchic17/aiosend · GitHub

https://github.com/vovchic17/aiosend/security/advisories/GHSA-7m8f-hgjq-8gc9
github_release Patch Available

v3.0.7

Patch available: vovchic17/aiosend v3.0.7

https://github.com/vovchic17/aiosend/releases/tag/v3.0.7
github_commit Patch Available

commit db20f0a74220 (vovchic17/aiosend)

Patch available: vovchic17/aiosend v3.0.7 (contains commit db20f0a74220)

https://github.com/vovchic17/aiosend/commit/db20f0a742209dfac181863d398ec5112687efa4

Vendor Advisories for CVE-2026-70646(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
aiosend0.1.14 ... 3.0.6 (23 versions)3.0.7—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-23 16:41 UTCEG score recompute
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-21 23:49 UTCEPSS rescore
  5. 2026-08-21 21:41 UTCEG score recompute
  6. 2026-08-20 22:56 UTCEPSS rescore
  7. 2026-08-20 18:39 UTCEG score recompute
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 16:48 UTCEG score recompute
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 03:19 UTCEG score recompute
  16. 2026-08-16 02:15 UTCEPSS rescore
  17. 2026-08-15 01:31 UTCEPSS rescore
  18. 2026-08-14 01:53 UTCEG score recompute
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-12 14:12 UTCEG score recompute
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-11 13:46 UTCEG score recompute
  23. 2026-08-11 00:29 UTCEG score recompute
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 00:05 UTCEG score recompute
Show 8 more
  1. 2026-08-09 13:47 UTCEPSS rescore
  2. 2026-08-09 01:24 UTCEG score recompute
  3. 2026-08-08 16:37 UTCEPSS rescore
  4. 2026-08-08 02:20 UTCEG score recompute
  5. 2026-08-08 02:12 UTCEG score recompute
  6. 2026-08-08 01:45 UTCEG score recompute
  7. 2026-08-06 15:30 UTCEG score recompute
  8. 2026-08-06 14:41 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-70646?
CVE-2026-70646 is a high vulnerability published on May 22, 2026. 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…
When was CVE-2026-70646 disclosed?
CVE-2026-70646 was first published in the National Vulnerability Database on May 22, 2026, with the most recent update on August 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70646 actively exploited?
CVE-2026-70646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 72.4% of all scored CVEs.
What is the CVSS score of CVE-2026-70646?
CVE-2026-70646 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-70646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70646, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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