mvv4 (RubyGems) · Malicious Code
Affects mvv4Source GCVE Database
Malicious package : remove mvv4 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-2026-8108
What to do
Remove mvv4 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 |
|---|---|---|
RubyGemsmvv4pkg:gem/mvv4Other threats | Affected
| Fixed in– |
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Description
The mvv4 RubyGem version 0.0.1 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. No known exploits in the wild have been reported.