CVE-2021-22877

EPSS 1.7%CWE-284

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.7%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

03 Mar 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.

Affected products

n/a · Nextcloud Server

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References

https://github.com/nextcloud/server/issues/24600 https://github.com/nextcloud/server/pull/25224 https://hackerone.com/reports/1061591 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/https://nextcloud.com/security/advisory/?id=NC-SA-2021-004