{"answers":{"affected":"4 open source packages ship an affected version, including payload. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-105863 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-2026-105863 is a critical authentication bypass 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-2026-105863 and fix it if it is affected.\n\nWhat it is: CVE-2026-105863 is a critical authentication bypass 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-2026-105863 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- payload (npm): affected from 3.0.0; fixed in 3.90.0\n- payload (npm): affected from 3.0.0; 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-2026-105863/ (Markdown: https://insights.sbomify.com/CVE-2026-105863/index.md)","id":"CVE-2026-105863","markdown":"https://insights.sbomify.com/CVE-2026-105863/index.md","name":"CVE-2026-105863","record":{"aliases":["GHSA-66wr-7vmr-p5jq"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Payload CMS","requires_auth":"none","summary":"Attackers can escalate privileges by mapping custom fields to reserved authentication claims in Payload CMS, requiring a non-default configuration.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"payload","vendor":"payloadcms"}],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-915","name":"Improperly Controlled Modification of Dynamically-Determined Object Attributes"},{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"Payload is a free and open source headless content management system. In versions after 3.0.0 and before 3.90.0, a custom field option that maps a field to a reserved authentication claim name can place unintended values in the authentication token issued at login. This issue is fixed in version 3.90.0.","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 authentication token field handling issue","id":"CVE-2026-105863","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Payload: Cross-tenant create in @payloadcms/plugin-multi-tenant","id":"CVE-2026-105864"},"packages":[{"ecosystem":"npm","fixed":["3.90.0"],"introduced":["3.0.0"],"last_affected":[],"package":"payload","purl":null,"source":"GHSA-66wr-7vmr-p5jq"},{"ecosystem":"npm","fixed":["3.90.0"],"introduced":["3.0.0"],"last_affected":[],"package":"payload","purl":"pkg:npm/payload","source":"GHSA-66wr-7vmr-p5jq"},{"ecosystem":"npm","fixed":["4.0.0-canary.34"],"introduced":["4.0.0-canary.0"],"last_affected":[],"package":"payload","purl":null,"source":"GHSA-66wr-7vmr-p5jq"},{"ecosystem":"npm","fixed":["4.0.0-canary.34"],"introduced":["4.0.0-canary.0"],"last_affected":[],"package":"payload","purl":"pkg:npm/payload","source":"GHSA-66wr-7vmr-p5jq"}],"prev":{"headline":"Payload: Bypassed sanitization of user uploaded SVGs","id":"CVE-2026-105862"},"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":9.1,"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":"total"},"state":"PUBLISHED","updated":"2026-10-09","vendors":["payloadcms"]},"summary":"Attackers can escalate privileges by mapping custom fields to reserved authentication claims in Payload CMS, requiring a non-default configuration.","url":"https://insights.sbomify.com/CVE-2026-105863/"}