CVE-2020-26234

Disabled Hostname Verification in OpenCast

MEDIUM
4.8
CVSS Score
Published: December 8, 2020 at 10:35 PM UTC
Updated: June 17, 2026 at 03:07 AM UTC
2 products affected across 2 vendorsOpencastOpencast

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.3%

Description

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 7.98.0 ≤ v < 8.9
Affected range stops below 7.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9, so it looks safe — our inference, not a vendor statement
v < 7.9v < 8.9
Affected range stops below 7.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

4.8MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-346

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