Session fixation on password protected public links in the ownCloud Server before 10.8.0 allows an attacker to bypass the password protecti…

published 2021-09-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-22583

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

Session fixation on password protected public links in the ownCloud Server before 10.8.0 allows an attacker to bypass the password protection when they can force a target client to use a controlled cookie.

Patch / fix

fixed in 1

owncloud owncloud 10.8.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-35948 updated 2025-11-21 cvss 8.1

owncloud: session fixation on password protected public links allows password bypass

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD	2.0	5.8	AV:N/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness

CWE-384 Session Fixation

References

doc.owncloud.com /server/admin_manual/release_notes.html
release-notes, vendor-advisory
owncloud.com /security-advisories/cve-2021-35948/
vendor-advisory

Sources

CVE List CVE-2021-35948
NVD CVE-2021-35948

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary