CVE-2026-57826: n/a
openHiTLS versions 0.2.0 through 0.3.2 have a vulnerability in their X.509 certificate chain verification process. Specifically, the basic constraints extension and CA flag checks for intermediate certificate authorities (CAs) are only performed on version 3 certificates, while version 1 and 2 certificates bypass these checks. This flaw could allow improper validation of certificate chains.
AI Analysis
Technical Summary
The vulnerability in openHiTLS 0.2.0 through 0.3.2 involves incomplete verification of the basic constraints extension and CA flag during X.509 certificate chain validation. The implementation only verifies these constraints for v3 certificates, ignoring v1 and v2 certificates. This can lead to acceptance of improperly validated intermediate CA certificates, potentially undermining the trust model of the certificate chain.
Potential Impact
This vulnerability impacts the confidentiality and integrity of communications relying on openHiTLS by allowing potentially malicious intermediate certificates to be accepted as valid. This could enable man-in-the-middle attacks or unauthorized certificate issuance. The CVSS score of 6.8 (medium severity) reflects the network attack vector, required low privileges, and high impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor vendor communications for patches addressing this certificate validation issue.
CVE-2026-57826: n/a
Description
openHiTLS versions 0.2.0 through 0.3.2 have a vulnerability in their X.509 certificate chain verification process. Specifically, the basic constraints extension and CA flag checks for intermediate certificate authorities (CAs) are only performed on version 3 certificates, while version 1 and 2 certificates bypass these checks. This flaw could allow improper validation of certificate chains.
CVSS v3.1
Score 6.8medium
Affected software
pkg:github/openhitls/openHiTLSRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in openHiTLS 0.2.0 through 0.3.2 involves incomplete verification of the basic constraints extension and CA flag during X.509 certificate chain validation. The implementation only verifies these constraints for v3 certificates, ignoring v1 and v2 certificates. This can lead to acceptance of improperly validated intermediate CA certificates, potentially undermining the trust model of the certificate chain.
Potential Impact
This vulnerability impacts the confidentiality and integrity of communications relying on openHiTLS by allowing potentially malicious intermediate certificates to be accepted as valid. This could enable man-in-the-middle attacks or unauthorized certificate issuance. The CVSS score of 6.8 (medium severity) reflects the network attack vector, required low privileges, and high impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor vendor communications for patches addressing this certificate validation issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-25T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a84be80c6e8be0332b43d1b
Added to database: 08/18/2026, 20:20:16 UTC
Last enriched: 09/07/2026, 15:56:57 UTC
Last updated: 10/02/2026, 02:46:05 UTC
Views: 57
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