PT-2026-40700 · Aria2C · Aria2C

Published 2026-05-13 · Updated 2026-05-13 · CVE-2026-8367

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions aria2c (affected versions not specified)

Description aria2c accepts a server certificate with incorrect Extended Key Usage (EKU), which is a certificate extension that defines the specific purposes for which the public key may be used. This allows attackers who compromise a certificate and its private key issued for a different purpose to reuse it for TLS server authentication.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2026-8367

Affected Products

Aria2C

References · 9

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-8367 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-8367 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-8367 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-8367 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-8367 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-8367 · Vendor Advisory
• https://github.com/aria2/aria2/issues/2355 · Note
• https://t.me/CVEtracker/53678 · Telegram Post
• https://tenable.com/security/research/tra-2026-38 · Note