CVE-2021-23827

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Third-Party Advisory github.com Third-Party Advisory hackerone.com Third-Party Advisory johnjhacking.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/keybase/client/releases third party advisory release notes
https://johnjhacking.com/blog/cve-2021-23827/ third party advisory exploit
https://hackerone.com/reports/1074930 issue tracking exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-23827?
CVE-2021-23827 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23827?
To fix CVE-2021-23827, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23827 being actively exploited in the wild?
It is possible that CVE-2021-23827 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.