swcalcelf (RubyGems) · Malicious Code
Affects swcalcelfSource GCVE Database
Malicious package : remove swcalcelf 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-2026-8927
What to do
Remove swcalcelf 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 |
|---|---|---|
RubyGemsswcalcelfpkg:gem/swcalcelfOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The RubyGems package 'swcalcelf' version 0.0.1 contains malicious code as identified by the OpenSSF malicious packages project. This is a case of a malicious package in the RubyGems ecosystem. No CVSS score or detailed technical exploitation information is provided.