OpenCA before 0.9.1.4 does not use the correct certificate in a chain to check the serial, which could cause OpenCA to accept revoked or expired certificates.
http://marc.info/?l=bugtraq&m=107003609308765&w=2
Source: Mitre, NVD
Published: 2003-12-15
Updated: 2016-10-18
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N