What is CVE-2026-77171?

CVE-2026-77171 is a low-severity vulnerability in Nextcloud Collectives, classified under Improper Access Control. CVSS score: 3.5/10. Published 2026-10-27.

How severe is CVE-2026-77171?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Nextcloud Collectives

CVE-2026-77171

A public shared collective always allowed recipients of the link to create pages.

Published 2026-10-27.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nextcloud Collectives

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

hackerone.com/reports/3533697

Frequently asked questions

What is CVE-2026-77171?: CVE-2026-77171 is a low-severity vulnerability in Nextcloud Collectives, classified under Improper Access Control. CVSS score: 3.5/10. Published 2026-10-27.
How severe is CVE-2026-77171?: Low severity. CVSS v3 base score is 3.5 out of 10.