CVE-2020-8121

Name: CVE-2020-8121
Creator: NVD / NIST
Published: 2020-02-04T20:15:14.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2020-8121 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.04%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	< 13.0.9
Nextcloud	Nextcloud Server	>= 14.0.0, < 14.0.5
Nextcloud	Nextcloud Server	>= 14.0.6, < 15.0.0

References

https://hackerone.com/reports/452854Exploit, Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2019-003Vendor Advisory
https://hackerone.com/reports/452854Exploit, Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2019-003Vendor Advisory

Timeline

Published: Feb 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8121?

A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.

How severe is CVE-2020-8121?

CVE-2020-8121 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8121?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8121?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST