CVE-2026-8367
MediumCVSS 4.8Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
aria2c accepts a server certificate with incorrect Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
Risk Assessment
An attacker could impersonate a trusted server, potentially leading to interception of TLS-transmitted data or man-in-the-middle attacks.
Recommendation
Update aria2 to a version that validates certificate EKU, or configure the client to reject certificates with incorrect EKU.
Other vulnerabilities in aria2
See allOriginal NVD description (English source)
aria2c accepts a server certificate with incorrect Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS