fosscw3 (RubyGems) · Malicious Code
Affects fosscw3Source GCVE Database
Malicious package : remove fosscw3 and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 16:07 UTC
Malicious package
Published to RubyGems · OSV MAL-2026-7692
What to do
Remove fosscw3 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 |
|---|---|---|
RubyGemsfosscw3pkg:gem/fosscw3Other threats | Affected
| Fixed in– |
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Description
The RubyGems package 'fosscw3' version 0.0.1 contains malicious code as identified by the OpenSSF project. This package is classified as a malicious package rather than a traditional vulnerability with a CVE score. No patch or remediation guidance is currently provided. There are no known exploits in the wild reported at this time.