{"answers":{"affected":"5 open source packages ship an affected version, including openc3. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42084 exists.","fix":"Upgrade openc3 to a fixed version for your release line: 6.10.5 or 7.0.0-rc3.","what":"CVE-2026-42084 is a high-severity authentication bypass vulnerability in OpenC3 cosmos, published on 4 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42084 and fix it if it is affected.\n\nWhat it is: CVE-2026-42084 is a high-severity authentication bypass vulnerability in OpenC3 cosmos, published on 4 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42084 exists.\n\nAffected packages and fixed versions:\n- openc3 (PyPI): affected all versions; fixed in 6.10.5\n- openc3 (RubyGems): affected all versions; fixed in 6.10.5\n- openc3 (RubyGems): affected all versions; fixed in 6.10.5\n- openc3 (RubyGems): affected from 7.0.0.pre.rc1; fixed in 7.0.0-rc3\n- openc3 (RubyGems): affected from 7.0.0.pre.rc1; fixed in 7.0.0-rc3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-42084/ (Markdown: https://insights.sbomify.com/CVE-2026-42084/index.md)","id":"CVE-2026-42084","markdown":"https://insights.sbomify.com/CVE-2026-42084/index.md","name":"CVE-2026-42084","record":{"aliases":["GHSA-wgx6-g857-jjf7","PYSEC-2026-2242"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenC3 COSMOS","requires_auth":"low_privilege","summary":"Attackers with a valid session token can reset passwords without the old password, gaining persistent access to hijacked accounts including admin.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"cosmos","vendor":"openc3"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-620","name":"Unverified Password Change"}],"description":"OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid session token instead. In assumed breach scenarios, this behaviour can be exploited by an attacker who has already obtained a valid session token, to gain persistence in hijacked account (including admin) and prevent legitimate users from accessing the account. This issue has been patched in versions 6.10.5 and 7.0.0-rc3.","ecosystems":["PyPI","RubyGems"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence","id":"CVE-2026-42084","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":5,"n_references":4,"next":{"headline":"OpenC3 COSMOS: Arbitrary write to plugins directory via path-traversed config filenames","id":"CVE-2026-42085"},"packages":[{"ecosystem":"PyPI","fixed":["6.10.5"],"introduced":["0"],"last_affected":[],"package":"openc3","purl":"pkg:pypi/openc3","source":"PYSEC-2026-2242"},{"ecosystem":"RubyGems","fixed":["6.10.5"],"introduced":["0"],"last_affected":[],"package":"openc3","purl":null,"source":"GHSA-wgx6-g857-jjf7"},{"ecosystem":"RubyGems","fixed":["6.10.5"],"introduced":["0"],"last_affected":[],"package":"openc3","purl":"pkg:gem/openc3","source":"GHSA-wgx6-g857-jjf7"},{"ecosystem":"RubyGems","fixed":["7.0.0-rc3"],"introduced":["7.0.0.pre.rc1"],"last_affected":[],"package":"openc3","purl":null,"source":"GHSA-wgx6-g857-jjf7"},{"ecosystem":"RubyGems","fixed":["7.0.0-rc3"],"introduced":["7.0.0.pre.rc1"],"last_affected":[],"package":"openc3","purl":"pkg:gem/openc3","source":"GHSA-wgx6-g857-jjf7"}],"prev":{"headline":"Free5GC PCF: Missing authentication middleware in Npcf_SMPolicyControl allows access to SM policy handlers and disclosure of subscriber SUPI","id":"CVE-2026-42083"},"products":["cosmos"],"published":"2026-05-04","related":[{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2025-28386","kev_date_added":null,"published":"2025-06-13"},{"cvss_score":9.8,"headline":"Hardcoded credentials in n/a","id":"CVE-2025-28388","kev_date_added":null,"published":"2025-06-13"},{"cvss_score":9.8,"headline":"Weak cryptography in n/a","id":"CVE-2025-28389","kev_date_added":null,"published":"2025-06-13"},{"cvss_score":9.6,"headline":"OpenC3 COSMOS: SQL Injection in QuestDB Time-Series Data Base","id":"CVE-2026-42087","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":9.6,"headline":"OpenC3 COSMOS: Administrative Actions via the Script Runner Tool","id":"CVE-2026-42088","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":9.1,"headline":"OpenC3 COSMOS Vulnerable to Directory Traversal via /script-api/scripts/ endpoint","id":"CVE-2025-28384","kev_date_added":null,"published":"2025-06-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-06","vendors":["OpenC3"]},"summary":"Attackers with a valid session token can reset passwords without the old password, gaining persistent access to hijacked accounts including admin.","url":"https://insights.sbomify.com/CVE-2026-42084/"}