CVE-2021-23827

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-312

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

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

Timeline

Published: Feb 23, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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