RubyGems/openc3 CVE-2026-42087: critical 9.6, EPSS 0.45%

OpenC3 COSMOS has SQL Injection in QuestDB Time-Series Database

Action: Upgrade openc3 to 7.0.0-rc3 or later.

bundle update openc3

Affected

Fixed versions

Sources

• osv: GHSA-v529-vhwc-wfc5
• https://github.com/OpenC3/cosmos/security/advisories/GHSA-v529-vhwc-wfc5
• https://nvd.nist.gov/vuln/detail/CVE-2026-42087
• https://github.com/OpenC3/cosmos/commit/9ba60c09c8836a37a2e4ea67ab35fe403e041415
• https://github.com/OpenC3/cosmos
• https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/openc3/CVE-2026-42087.yml

CVE-2026-42087 · published 2026-04-23T14:12:02Z · modified 2026-07-13T07:26:28.641096018Z · JSON