rjan4 (RubyGems) · Malicious Code
Affects rjan4Source GCVE Database
Malicious package : remove rjan4 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-2026-8529
What to do
Remove rjan4 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 |
|---|---|---|
RubyGemsrjan4pkg:gem/rjan4Other threats | Affected
| Fixed in– |
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Description
The RubyGems package 'rjan4' version 0.0.1 contains malicious code as identified by the OpenSSF malicious packages database. This package is flagged as a malicious package rather than a traditional vulnerability with a patch. No official fix or remediation guidance is provided. There are no known exploits in the wild at this time.