CVE-2021-32655
lowpriority · track · 14EPSS 0.010 · 64 %ileEUUSEPSS · scored 2026-10-27
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (6)
Products and version ranges known to be affected.
also known as (2)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvcnnvd
- https://hackerone.com/reports/1167929cnnvd
- https://packetstormsecurity.com/files/168058/Gentoo-Linux-Security-Advisory-202208-17.htmlcnnvd
- https://security.gentoo.org/glsa/202208-17cnnvd
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvenisa_euvd
- https://hackerone.com/reports/1167929enisa_euvd
- https://security.gentoo.org/glsa/202208-17enisa_euvd
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvThird Party Advisorynvd
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