SB2020120864 - Improper validation of certificate with host mismatch in Opencast
Published: December 8, 2020 Updated: April 23, 2026
Security Bulletin ID
SB2020120864
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper validation of certificate with host mismatch (CVE-ID: CVE-2020-26234)
The vulnerability allows a remote attacker to conduct man-in-the-middle attacks.
The vulnerability exists due to improper certificate validation in the HTTP client when handling HTTPS requests. A remote attacker can present a certificate with a mismatched hostname to conduct man-in-the-middle attacks.
Remediation
Install update from vendor's website.