What is CVE-2025-49901?

CVE-2025-49901 is a critical-severity vulnerability in Quantumcloud Simple Link Directory, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2025-10-22.

How severe is CVE-2025-49901?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-49901 known to be exploited?

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

Vulnerability in Quantumcloud Simple Link Directory

CVE-2025-49901

Authentication Bypass Using an Alternate Path or Channel vulnerability in quantumcloud Simple Link Directory qc-simple-link-directory allows Authentication Abuse.This issue affects Simple Link Directory: from n/a through < 14.8.1.

EPSS: 0.001 (22.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Quantumcloud Simple Link Directory — versions 0

Weakness classification (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path or Channel

Public proof-of-concept exploits

Nxploited/CVE-2025-49901

References

patchstack.com/database/Wordpress/Plugin/qc-simple-link-directory/vulnerability… (vdb-entry)

Frequently asked questions

What is CVE-2025-49901?: CVE-2025-49901 is a critical-severity vulnerability in Quantumcloud Simple Link Directory, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2025-10-22.
How severe is CVE-2025-49901?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-49901 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.