CVE-2021-23827

Keybase Desktop Client before 5.6.0 on Windows and macOS, and before 5.6.1 on Linux, allows an attacker to obtain potentially sensitive media (such as private pictures) in the Cache and uploadtemps directories. It fails to effectively clear cached pictures, even after deletion via normal methodology within the client, or by utilizing the "Explode message/Explode now" functionality. Local filesystem access is needed by the attacker.

• CWE-312

• https://github.com/keybase/client/releasesRelease Notes, Third Party Advisory
• https://hackerone.com/reports/1074930Exploit, Issue Tracking, Third Party Advisory
• https://johnjhacking.com/blog/cve-2021-23827/Exploit, Third Party Advisory
• https://github.com/keybase/client/releasesRelease Notes, Third Party Advisory
• https://hackerone.com/reports/1074930Exploit, Issue Tracking, Third Party Advisory
• https://johnjhacking.com/blog/cve-2021-23827/Exploit, Third Party Advisory

Published

Feb 23, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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