u2f_client (RubyGems) · Malicious Code
Affects u2f_clientSource GCVE Database
Malicious package : remove u2f_client and rotate any secrets on hosts that installed it.
Data as of 18 Jul 2026, 22:32 UTC
Malicious package
Published to RubyGems · OSV MAL-2025-192924
What to do
Remove u2f_client from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
RubyGemsu2f_clientpkg:gem/u2f_clientOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The u2f_client RubyGem version 0.2 contains malicious code as identified by the OpenSSF malicious packages project. This package is flagged as a malicious package rather than a traditional vulnerability. There is no CVSS score or detailed technical exploit information available. No patch or remediation guidance is provided in the source data.