knot-simple-formatter (RubyGems) · Malicious Code
Affects knot-simple-formatterSource GCVE Database
Malicious package : remove knot-simple-formatter and rotate any secrets on hosts that installed it.
Data as of 18 Jul 2026, 23:50 UTC
Malicious package
Published to RubyGems · OSV MAL-2026-3636
What to do
Remove knot-simple-formatter 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 |
|---|---|---|
| RubyGemsknot-simple-formatter | Affected
| Fixed in– |
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Description
The knot-simple-formatter RubyGem version 1.0.0 is identified as a malicious package. It is part of the Go BufferZoneCorp and RubyGems knot-theory clusters known to steal credentials, establish unauthorized SSH access, and manipulate build and workflow environment variables. This package poses a significant security risk to users who install or use it.