An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00115.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gitcode.com/openHiTLS/openhitls/pull/1399 cve-icon cve-icon
https://gitcode.com/openHiTLS/openhitls/pull/1657 cve-icon cve-icon
https://github.com/openHiTLS/openHiTLS/commit/2d3b221d113b452bc197012b185978b8314ee8a4 cve-icon cve-icon
https://github.com/openHiTLS/openHiTLS/commit/4355cdf5b043d5b9ef698f8f57860f77f8e92561 cve-icon cve-icon
https://github.com/openHiTLS/openHiTLS/compare/openhitls-0.3.2...openhitls-0.3.3 cve-icon cve-icon
https://www.openhitls.net/zh/support/HTLS-2026-001.html cve-icon cve-icon
History

Wed, 19 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-295
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 18 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
References

Tue, 18 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
Description An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-19T18:29:37.737Z

Reserved: 2026-06-25T00:00:00.000Z

Link: CVE-2026-57826

cve-icon Vulnrichment

Updated: 2026-08-19T18:27:34.045Z

cve-icon NVD

Status : Received

Published: 2026-08-18T20:17:19.193

Modified: 2026-08-19T19:17:20.950

Link: CVE-2026-57826

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses