What is CVE-2021-35947?

CVE-2021-35947 is a medium-severity vulnerability in ownCloud, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2021-09-07.

How severe is CVE-2021-35947?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in ownCloud

CVE-2021-35947

The public share controller in the ownCloud server before version 10.8.0 allows a remote attacker to see the internal path and the username of a public share by including invalid characters in the URL.

Published 2021-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (68.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

ownCloud

Weakness classification (CWE)

CWE-209 — Generation of Error Message Containing Sensitive Information

References

doc.owncloud.com/server/admin_manual/release_notes.html (Release Notes, Vendor Advisory)
owncloud.com/security-advisories/cve-2021-35947/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-35947?: CVE-2021-35947 is a medium-severity vulnerability in ownCloud, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.3/10. Published 2021-09-07.
How severe is CVE-2021-35947?: Medium severity. CVSS v3 base score is 5.3 out of 10.