CVE-2021-32653: nextcloud nextcloud_server
Vulnerability summary
CVE-2021-32653 is a medium (CVSS 4.0) vulnerability in nextcloud nextcloud_server. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 67.8% of scored vulnerabilities.
Timeline
- 01-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST2.7LowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.21%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.21% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Nextcloud2 products
- nextcloud_server< 19.0.11 | ≥ 20.0.0, < 20.0.10 | ≥ 21.0.0, < 21.0.2
- security-advisories< 19.0.11 | ≥ 20.0.0, < 20.0.10 | ≥ 21.0.0, < 21.0.2
1 vendor · 2 products
References
3 links- github.com/nextcloud/security-advisories/security/advisories/GHSA-396j-vqpr-qg45X Refsource CONFIRMThird Party Advisory