aria2c Improper Certificate Validation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-8367
StatePUBLISHED
Assignertenable
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-13 16:17:04 UTC
Updated2026-05-13 16:27:11 UTC
Descriptionaria2c 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 And Classification

Primary CVSS: v3.1 4.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.000210000 probability, percentile 0.059560000 (date 2026-05-20)

Problem Types: CWE-295 | CWE-295 CWE-295 Improper certificate validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNACVSS4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Aria2 Project Aria2c affected 1.37.0 semver Not specified

References

ReferenceSourceLinkTags
www.tenable.com/security/research/tra-2026-38 [email protected] www.tenable.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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