aria2c Improper Certificate Validation
Priority LOW 23CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00127 2nd 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
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| aria2_project | aria2c | up to 1.37.0 | — | No fix listed | CNA |
- aria2c Vendoraria2_project Affected up to 1.37.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:aria2_project:aria2:*:*:*:*:*:*:*:* | before 1.37.0 | Vulnerable | aria2_project |
- cpe:2.3:a:aria2_project:aria2:*:*:*:*:*:*:*:* Versions before 1.37.0 Vulnerable ·aria2_project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8367
- 2026-10-03 Alias added: GHSA-rpx3-3f8j-f6v2
References
More aria2_project Aria2 vulnerabilities
- TI-2019-02616 aria2c in aria2 1.33.1, when --log is used, can store an HTTP Basic Authentication… CVSS 3.1HIGH 7.8
Sources
- CVE-2026-8367 · CVE Program
- CVE-2026-8367 · NVD
- FIRST EPSS
- GHSA-rpx3-3f8j-f6v2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences