{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100540 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-100540 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-100540 is a high-severity authentication bypass vulnerability in openclaw feishu, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-100540 and fix it if it is affected.\n\nWhat it is: CVE-2026-100540 is a high-severity authentication bypass vulnerability in openclaw feishu, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-100540 in the wild and no public exploit code.\n\nAffected product: openclaw feishu. 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-2026-100540/ (Markdown: https://insights.sbomify.com/CVE-2026-100540/index.md)","id":"CVE-2026-100540","markdown":"https://insights.sbomify.com/CVE-2026-100540/index.md","name":"CVE-2026-100540","record":{"aliases":["GHSA-77rw-6qrm-8q2v","GHSA-h2qg-fxpv-82v6"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"Feishu integration library","requires_auth":"low_privilege","summary":"Attackers can bypass authentication in multi-account setups to read or modify Feishu resources using credentials from a disabled default account.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"OpenClaw Feishu before 2026.8.1 fails to validate whether a configured default account is disabled before selecting it for model tool operations. Attackers can exploit multi-account setups where a disabled default account retains credentials to read or modify Feishu resources through a revoked identity.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"OpenClaw Feishu before 2026.8.1 Authentication Bypass via Disabled Account","id":"CVE-2026-100540","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding","id":"CVE-2026-100541"},"packages":[],"prev":{"headline":"OpenClaw before 2026.8.1 Memory Access Control Bypass","id":"CVE-2026-100539"},"products":["feishu"],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["openclaw"]},"summary":"Attackers can bypass authentication in multi-account setups to read or modify Feishu resources using credentials from a disabled default account.","url":"https://insights.sbomify.com/CVE-2026-100540/"}