What is CVE-2020-8179?

CVE-2020-8179 is a medium-severity vulnerability in Nextcloud Deck, classified under Improper Access Control. CVSS score: 4.1/10. Published 2020-07-02.

How severe is CVE-2020-8179?

Medium severity. CVSS v3 base score is 4.1 out of 10.

Privilege escalation in Nextcloud Deck

CVE-2020-8179

Improper access control in Nextcloud Deck 1.0.0 allowed an attacker to inject tasks into other users decks.

Published 2020-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Nextcloud Deck
Nextcloud Deck — versions Fixed in 1.0.1

Weakness classification (CWE)

References

hackerone.com/reports/867052 (Permissions Required, Third Party Advisory)
nextcloud.com/security/advisory/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-8179?: CVE-2020-8179 is a medium-severity vulnerability in Nextcloud Deck, classified under Improper Access Control. CVSS score: 4.1/10. Published 2020-07-02.
How severe is CVE-2020-8179?: Medium severity. CVSS v3 base score is 4.1 out of 10.