{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-110843 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-110843 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-110843 is a high-severity denial of service vulnerability in n8n-io n8n, published on 14 Oct 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-2026-110843 and fix it if it is affected.\n\nWhat it is: CVE-2026-110843 is a high-severity denial of service vulnerability in n8n-io n8n, published on 14 Oct 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-2026-110843 in the wild and no public exploit code.\n\nAffected product: n8n-io n8n. 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-2026-110843/ (Markdown: https://insights.sbomify.com/CVE-2026-110843/index.md)","id":"CVE-2026-110843","markdown":"https://insights.sbomify.com/CVE-2026-110843/index.md","name":"CVE-2026-110843","record":{"aliases":["GHSA-3qcw-p65v-c7vq","GHSA-8fm5-rv7r-2xfg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"n8n workflow automation","requires_auth":"none","summary":"Unauthenticated attackers can exhaust disk space by creating unlimited OAuth client records via the authorize endpoint, causing denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"n8n before 2.41.4 and 2.42.x before 2.42.1 contains an uncontrolled resource consumption vulnerability in the unauthenticated OAuth authorize endpoint, which resolves clients by URL path but stores the caller's raw identifier as the record key. Unauthenticated attackers can send identifiers differing only in their query string to create unlimited first-party client records that bypass the registration cap, growing the database until the disk fills.","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":"n8n before 2.41.4 and 2.42.1 Unauthenticated Unbounded OAuth Client Persistence via Authorize Endpoint","id":"CVE-2026-110843","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":"n8n before 1.123.83 Credential Authorization Bypass via Nested Inline Sub-Workflows","id":"CVE-2026-110844"},"packages":[],"prev":{"headline":"n8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation Interpreter","id":"CVE-2026-110842"},"products":["n8n"],"published":"2026-10-14","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":"partial"},"state":"PUBLISHED","updated":"2026-10-16","vendors":["n8n-io"]},"summary":"Unauthenticated attackers can exhaust disk space by creating unlimited OAuth client records via the authorize endpoint, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-110843/"}