CVE-2021-23827

low-risk
Published 2021-02-23

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.

Do I need to act?

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0.04% 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
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Keybase
Keybase

Affected Vendors

Keybase

References (6)

Release Notes https://github.com/keybase/client/releases
Exploit https://hackerone.com/reports/1074930
Exploit https://johnjhacking.com/blog/cve-2021-23827/
Release Notes https://github.com/keybase/client/releases
Exploit https://hackerone.com/reports/1074930
Exploit https://johnjhacking.com/blog/cve-2021-23827/
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low