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OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence
OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence
Affected packages
- openc3— before 6.10.5
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7
- https://nvd.nist.gov/vuln/detail/CVE-2026-42084
- https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776
- https://github.com/OpenC3/cosmos
- https://github.com/OpenC3/cosmos/releases/tag/v6.10.5
- https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/openc3/CVE-2026-42084.yml
Structured record: https://osv.dev/vulnerability/GHSA-wgx6-g857-jjf7
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