CVE-2021-32653

low-risk
Published 2021-06-01

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.

Do I need to act?

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0.38% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.7/10 Low
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Nextcloud

References (6)

Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-396j-v...
Permissions Required https://hackerone.com/reports/1173436
Third Party Advisory https://security.gentoo.org/glsa/202208-17
Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-396j-v...
Permissions Required https://hackerone.com/reports/1173436
Third Party Advisory https://security.gentoo.org/glsa/202208-17
20
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal