mt8403sufu (RubyGems) · Malicious Code
Affects mt8403sufuSource GCVE Database
Malicious package : remove mt8403sufu 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-2026-8099
What to do
Remove mt8403sufu 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 |
|---|---|---|
RubyGemsmt8403sufupkg:gem/mt8403sufuOther threats | Affected
| Fixed in– |
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Description
The RubyGems package 'mt8403sufu' 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.