PatchTheCVECVE-2021-34426: A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the
CVE-2021-34426 is a medium-severity flaw (CVSS 5.3) affecting keybase. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 84%) |
| CISA exploited list | No |
| Published | 2021-12-14 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-34426?
keybase: upgrade to 5.6.0. Exact commands for each OS are on this page.
Is CVE-2021-34426 being exploited?
CVE-2021-34426 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-34426 affect?
CVE-2021-34426 affects keybase. Severity is medium (CVSS 5.3). A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'
How urgent is CVE-2021-34426?
Priority 23/100. No elevated risk signals yet.
Software pages
Windows vulnerabilities · Git vulnerabilities
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