donjon-ledger (RubyGems) · Malicious Code
Affects donjon-ledgerSource GCVE Database
Malicious package : remove donjon-ledger and rotate any secrets on hosts that installed it.
Data as of 8 Nov 2026, 10:51 UTC
Malicious package
Published to RubyGems · OSV MAL-2026-18765
What to do
Remove donjon-ledger 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 |
|---|---|---|
| RubyGemsdonjon-ledger | Affected
| Fixed in– |
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Description
The donjon-ledger RubyGem version 2.0.2 contains malicious code executed during installation. The gemspec declares a native extension that runs a Ruby script collecting host identifiers and sensitive system files, then exfiltrates this data over a TLS connection to a hardcoded external server. This behavior occurs automatically when the gem is installed, without any legitimate build activity.