Vulnerability · Published Aug 18, 2026 · Assigned by mitre
CVE-2026-57826
Medium 6.8
In plain English
A medium-severity improper certificate validation in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.3%top 81.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/openHiTLS/openHiTLS/compare/openhitls-0.3.2...openhitls-0.3.3
- https://www.openhitls.net/zh/support/HTLS-2026-001.html
- https://github.com/openHiTLS/openHiTLS/commit/4355cdf5b043d5b9ef698f8f57860f77f8e92561
- https://github.com/openHiTLS/openHiTLS/commit/2d3b221d113b452bc197012b185978b8314ee8a4
- https://gitcode.com/openHiTLS/openhitls/pull/1399
- https://gitcode.com/openHiTLS/openhitls/pull/1657