TI-2020-16267 Aliases CVE-2020-26800 GHSA-8pw5-pwp5-8mcx

A stack overflow vulnerability in Aleth Ethereum C++ client version <= 1.8.0 using a…

LOW 27CWE-787Published 2021-01-11 · Updated 2024-08-04

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A stack overflow vulnerability in Aleth Ethereum C++ client version <= 1.8.0 using a specially crafted a config.json file may result in a denial of service.

Why it matters now

EPSS 0.01218 68th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ethereum:aleth::::::::	up to 1.8.0	Vulnerable	ethereum

cpe:2.3:a:ethereum:aleth:*:*:*:*:*:*:*:* Versions up to 1.8.0 Vulnerable ·ethereum

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-26800
2026-10-03 Alias added: GHSA-8pw5-pwp5-8mcx

References

Exploit 1

https://github.com/ethereum/aleth/issues/5917

Advisory 2

TI-2017-08909 Incorrect authorization in Talos CPP-Ethereum CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences