{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100558 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-100558 is a high-severity denial of service vulnerability in OpenClaw, published on 26 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-2026-100558 and fix it if it is affected.\n\nWhat it is: CVE-2026-100558 is a high-severity denial of service vulnerability in OpenClaw, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-100558 in the wild and no public exploit code.\n\nAffected product: OpenClaw. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-100558/ (Markdown: https://insights.sbomify.com/CVE-2026-100558/index.md)","id":"CVE-2026-100558","markdown":"https://insights.sbomify.com/CVE-2026-100558/index.md","name":"CVE-2026-100558","record":{"aliases":["GHSA-4r25-35qc-fr6j","GHSA-5m65-2pj9-qf79","MINI-fphf-rjqv-26x3"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenClaw gateway","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service in OpenClaw by exhausting listener resources via malformed WebSocket upgrade requests.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"OpenClaw versions before 2026.8.1 contain a resource exhaustion vulnerability in the Gateway listener that allows unauthenticated clients to retain response sockets by sending WebSocket upgrade requests without matching connection semantics. Attackers can repeatedly send malformed upgrade requests to exhaust listener resources and cause denial of service without consuming the WebSocket pre-auth connection budget.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"OpenClaw before 2026.8.1 Resource Exhaustion via WebSocket Upgrade","id":"CVE-2026-100558","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"OpenClaw before 2026.8.1 Command Injection via Escaped Newlines","id":"CVE-2026-100559"},"packages":[],"prev":{"headline":"OpenClaw before 2026.8.1 Authorization Bypass via Skill Tool Dispatch","id":"CVE-2026-100557"},"products":["OpenClaw"],"published":"2026-09-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-28","vendors":["OpenClaw"]},"summary":"Unauthenticated attackers can cause denial of service in OpenClaw by exhausting listener resources via malformed WebSocket upgrade requests.","url":"https://insights.sbomify.com/CVE-2026-100558/"}