Auth bypass in Josselynj Pcloud Backup

CVE-2025-31755

Missing Authorization vulnerability in josselynj pCloud Backup pcloud-backup allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects pCloud Backup: from n/a through <= 1.0.1.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-31755: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-31755?
CVE-2025-31755 is a medium-severity vulnerability in Josselynj Pcloud Backup, classified under Missing Authorization. CVSS score: 4.3/10. Published 2025-04-01.
How severe is CVE-2025-31755?
Medium severity. CVSS v3 base score is 4.3 out of 10.