CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
CVE-2026-8367 (GCVE-0-2026-8367)
Vulnerability from cvelistv5 – Published: 2026-05-13 14:55 – Updated: 2026-05-13 18:35
VLAI
Title
aria2c Improper Certificate Validation
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.
Severity
4.8 (Medium)
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| aria2_project | aria2c |
Affected:
0 , ≤ 1.37.0
(semver)
|
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CVE-2026-8992 (GCVE-0-2026-8992)
Vulnerability from cvelistv5 – Published: 2026-05-22 14:24 – Updated: 2026-05-23 03:55
VLAI
Summary
An improper certificate validation vulnerability in Ivanti Secure Access Client before 22.8R6 allows a remote unauthenticated attacker to execute arbitrary code.
Severity
8.8 (High)
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ivanti | Secure Access Client |
Unaffected:
22.8R6
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Mitigation
Phases: Architecture and Design, Implementation
Description:
- Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
Phase: Implementation
Description:
- If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.