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CVE-2026-8367

aria2c Improper Certificate Validation

MEDIUM
5.3
CVSS Score
Published: May 13, 2026 at 02:55 PM UTC
Updated: October 26, 2026 at 05:10 PM UTC
2 products affected across 1 vendorARIA2Project ARIA2

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ARIA2· ARIA2 Project
95%
v < 1.37.0
Affected range stops below 1.37.0, so it looks safe — our inference, not a vendor statement
Project ARIA2· ARIA2 Project
90%
v ≤ 1.37.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitThird Party Advisory
Source: cverecord
https://www.tenable.com/security/research/tra-2026-38

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

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