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CVE-2021-32733
MEDIUM4.8
Description
Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy.
CVE Details
CVSS v3.1 Score4.8
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
Attack VectorNETWORK
ComplexityHIGH
Privileges RequiredLOW
User InteractionREQUIRED
Published7/12/2021
Last Modified11/21/2024
Sourcenvd
Honeypot Sightings0
Affected Products
nextcloud:nextcloud_server
Weaknesses (CWE)
CWE-79CWE-79
References
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq(security-advisories@github.com)
https://github.com/nextcloud/text/pull/1689(security-advisories@github.com)
https://hackerone.com/reports/1241460(security-advisories@github.com)
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq(af854a3a-2127-422b-91ae-364da2661108)
https://github.com/nextcloud/text/pull/1689(af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1241460(af854a3a-2127-422b-91ae-364da2661108)
IOC Correlations
No correlations recorded
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