What is CVE-2025-56449?

CVE-2025-56449 is a high-severity vulnerability in N/a, classified under Authentication Bypass by Spoofing. CVSS score: 8.2/10. Published 2025-09-29.

How severe is CVE-2025-56449?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2025-56449 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in N/a

CVE-2025-56449

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.

EPSS: 0.004 (28.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-56449?: CVE-2025-56449 is a high-severity vulnerability in N/a, classified under Authentication Bypass by Spoofing. CVSS score: 8.2/10. Published 2025-09-29.
How severe is CVE-2025-56449?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2025-56449 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.