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CVE-2025-56449

8.2 · HIGH

A security vulnerability was identified in Obsidian Scheduler's REST API 5.0.0 thru 6.3.0.

Published Sep 29, 2025CWE-290EPSS 0.38%

Overview

CVE-2025-56449 is a high-severity vulnerability. It was published on September 29, 2025 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A security vulnerability was identified in Obsidian Scheduler's REST API 5.0.0 thru 6.3.0. If an account is locked out due to not enrolling in MFA (e.g. after the 7-day enforcement window), the REST API still allows the use of Basic Authentication to authenticate and perform administrative actions. In particular, the default admin account was found to be locked out via the web interface but still usable through the REST API. This allowed creation of a new privileged user, bypassing MFA protections. This undermines the intended security posture of MFA enforcement.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblog.gregscharf.com/2025/07/11/upcoming-vulnerability-advisory/Refblog.gregscharf.com/2025/07/31/obsidian-scheduler-access-control-vulnerability/Refwiki.obsidianscheduler.com/docs/Release_Notes#Obsidian_6.3.1

How CyberStrike helps

Frequently asked questions

What is CVE-2025-56449?

CVE-2025-56449 is a high-severity vulnerability. It was published on September 29, 2025 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2025-56449?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-56449?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-56449?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-56449 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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