zwcalx0 (RubyGems) · Malicious Code
Affects zwcalx0Source GCVE Database
Malicious package : remove zwcalx0 and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 16:06 UTC
Malicious package
Published to RubyGems · OSV MAL-2026-9839
What to do
Remove zwcalx0 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 |
|---|---|---|
RubyGemszwcalx0pkg:gem/zwcalx0Other threats | Affected
| Fixed in– |
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Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: ghsa-malware (b635ba544b8c4878caf1c36788970bf7ff1cd77bd84e917bdeafca5d9cb96ea6) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zwcalx0/MAL-2026-9839.json))