{"answers":{"affected":"3 open source packages ship an affected version, including github.com/klever-io/klever-go.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86064 exists.","fix":"Upgrade github.com/klever-io/klever-go to 1.7.20 or later.","what":"CVE-2026-86064 is a high-severity missing authorization vulnerability in klever-io klever-go, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-86064 and fix it if it is affected.\n\nWhat it is: CVE-2026-86064 is a high-severity missing authorization vulnerability in klever-io klever-go, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86064 exists.\n\nAffected packages and fixed versions:\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.20\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.20\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.20\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-2026-86064/ (Markdown: https://insights.sbomify.com/CVE-2026-86064/index.md)","id":"CVE-2026-86064","markdown":"https://insights.sbomify.com/CVE-2026-86064/index.md","name":"CVE-2026-86064","record":{"aliases":["GHSA-9v8p-frvj-2pcm","GO-2026-6583"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Klever blockchain node","requires_auth":"none","summary":"Unauthenticated remote attackers can modify global log settings and access live process logs via the /log WebSocket route in Klever-Go nodes.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /log WebSocket route configured in config/node/api.yaml and registered by network/api/api.go does not require authentication. The first client message is parsed as a logger Profile in network/api/logs/logSender.go and applied process-wide through Profile.Apply, allowing a remote client to change global log levels and formatting options until the connection closes. The same connection is registered as a log observer and can receive live process logs. An attacker can suppress normal logs, increase verbosity, distort operator visibility, and access operational information without credentials. This issue is fixed in version 1.7.20.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Klever-Go: /log controls global node logging","id":"CVE-2026-86064","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Klever-Go: Unauthenticated WebSocket /subscribe: no read-size limit, no connection cap, permissive origin -\u003e remote node memory/goroutine exhaustion (DoS)","id":"CVE-2026-86065"},"packages":[{"ecosystem":"Go","fixed":["1.7.20"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":null,"source":"GHSA-9v8p-frvj-2pcm"},{"ecosystem":"Go","fixed":["1.7.20"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":"pkg:golang/github.com/klever-io/klever-go","source":"GHSA-9v8p-frvj-2pcm"},{"ecosystem":"Go","fixed":["1.7.20"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":"pkg:golang/github.com/klever-io/klever-go","source":"GO-2026-6583"}],"prev":{"headline":"Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning","id":"CVE-2026-86063"},"products":["klever-go"],"published":"2026-09-23","related":[],"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":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-23","vendors":["klever-io"]},"summary":"Unauthenticated remote attackers can modify global log settings and access live process logs via the /log WebSocket route in Klever-Go nodes.","url":"https://insights.sbomify.com/CVE-2026-86064/"}