{"answers":{"affected":"4 open source packages ship an affected version, including payload. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-105866 in the wild and no public exploit code.","fix":"Upgrade payload to a fixed version for your release line: 3.90.0 or 4.0.0-canary.34.","what":"CVE-2026-105866 is a medium-severity denial of service vulnerability in payloadcms payload, published on 6 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-2026-105866 and fix it if it is affected.\n\nWhat it is: CVE-2026-105866 is a medium-severity denial of service vulnerability in payloadcms payload, published on 6 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-2026-105866 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- payload (npm): affected all versions; fixed in 3.90.0\n- payload (npm): affected all versions; fixed in 3.90.0\n- payload (npm): affected from 4.0.0-canary.0; fixed in 4.0.0-canary.34\n- payload (npm): affected from 4.0.0-canary.0; fixed in 4.0.0-canary.34\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-2026-105866/ (Markdown: https://insights.sbomify.com/CVE-2026-105866/index.md)","id":"CVE-2026-105866","markdown":"https://insights.sbomify.com/CVE-2026-105866/index.md","name":"CVE-2026-105866","record":{"aliases":["GHSA-v5gf-vpjc-pc7w"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Headless CMS","requires_auth":"none","summary":"Unauthenticated attackers can lock out valid users by abusing the account lockout mechanism in Payload CMS, requiring an upgrade to fix.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"payload","vendor":"payloadcms"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-645","name":"Overly Restrictive Account Lockout Mechanism"},{"id":"CWE-307","name":"Improper Restriction of Excessive Authentication Attempts"}],"description":"Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, an unauthenticated attacker who knows an account email address or username can abuse the account lockout mechanism of a local-authentication collection to prevent that account from signing in. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.","ecosystems":["npm"],"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":"Payload: Unauthenticated account-lockout denial of service","id":"CVE-2026-105866","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Payload: Client uploads could overwrite S3 objects","id":"CVE-2026-105867"},"packages":[{"ecosystem":"npm","fixed":["3.90.0"],"introduced":["0"],"last_affected":[],"package":"payload","purl":null,"source":"GHSA-v5gf-vpjc-pc7w"},{"ecosystem":"npm","fixed":["3.90.0"],"introduced":["0"],"last_affected":[],"package":"payload","purl":"pkg:npm/payload","source":"GHSA-v5gf-vpjc-pc7w"},{"ecosystem":"npm","fixed":["4.0.0-canary.34"],"introduced":["4.0.0-canary.0"],"last_affected":[],"package":"payload","purl":null,"source":"GHSA-v5gf-vpjc-pc7w"},{"ecosystem":"npm","fixed":["4.0.0-canary.34"],"introduced":["4.0.0-canary.0"],"last_affected":[],"package":"payload","purl":"pkg:npm/payload","source":"GHSA-v5gf-vpjc-pc7w"}],"prev":{"headline":"Payload: Incomplete validation during the upload file lifecycle","id":"CVE-2026-105865"},"products":["payload"],"published":"2026-10-06","related":[{"cvss_score":10,"headline":"Payload: RCE in Payload Form Builder","id":"CVE-2026-105857","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Payload: Unauthorized update to collection documents","id":"CVE-2026-105859","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Payload has an SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters","id":"CVE-2026-25544","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":9.8,"headline":"Unrestricted Upload of File with Dangerous Type in Payload","id":"CVE-2022-27952","kev_date_added":null,"published":"2022-04-12"},{"cvss_score":9.3,"headline":"Payload: Field access control bypass on auth collections","id":"CVE-2026-105851","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.2,"headline":"Payload authentication token field handling issue","id":"CVE-2026-105863","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.1,"headline":"Payload has Unvalidated Input in Password Recovery Endpoints","id":"CVE-2026-34751","kev_date_added":null,"published":"2026-04-01"}],"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":"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-06","vendors":["payloadcms"]},"summary":"Unauthenticated attackers can lock out valid users by abusing the account lockout mechanism in Payload CMS, requiring an upgrade to fix.","url":"https://insights.sbomify.com/CVE-2026-105866/"}