PatchTheCVECVE-2021-34422: The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the
CVE-2021-34422 is a high-severity flaw (CVSS 7.2) affecting keybase. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file name which could allow a user to execute an application which was not intended on their host machine. If a malicious user leveraged this issue with the public folder sharing feature of the Keybase client, this co
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.2 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.4% (top 28%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2021-11-11 |
| 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-2021-34422?
keybase: upgrade to 5.7.0. Exact commands for each OS are on this page.
Is CVE-2021-34422 being exploited?
CVE-2021-34422 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-2021-34422 affect?
CVE-2021-34422 affects keybase. Severity is high (CVSS 7.2). The Keybase Client for Windows before version 5.7.0 contains a path traversal vulnerability when checking the name of a file uploaded to a team folder. A malicious user could upload a file to a shared folder with a specially crafted file na
How urgent is CVE-2021-34422?
Priority 48/100. High severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
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