Open Redirect in Nextcloud Security-Advisories
CVE-2021-41180
Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Nextcloud Security-Advisories — versions < 12.1.2
- Nextcloud Talk
Weakness classification (CWE)
References
- github.com/nextcloud/security-advisories/security/advisories/GHSA-4fxr-mrw2-cq92 (Third Party Advisory, Issue Tracking)
- github.com/nextcloud/spreed/pull/6239 (Patch, Third Party Advisory)
- hackerone.com/reports/1337178 (Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41180?
- CVE-2021-41180 is a medium-severity vulnerability in Nextcloud Security-Advisories, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2022-03-08.
- How severe is CVE-2021-41180?
- Medium severity. CVSS v3 base score is 4.7 out of 10.