{"answers":{"affected":"2 open source packages ship an affected version, including node and node-min. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21636 in the wild and no public exploit code.","fix":"Upgrade node to 25.3.0 or later.","what":"CVE-2026-21636 is a medium-severity vulnerability in Nodejs Node.js, published on 20 Jan 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-2026-21636 and fix it if it is affected.\n\nWhat it is: CVE-2026-21636 is a medium-severity vulnerability in Nodejs Node.js, published on 20 Jan 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-2026-21636 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- node (Bitnami): affected from 25.0.0; fixed in 25.3.0\n- node-min (Bitnami): affected from 25.0.0; fixed in 25.3.0\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-2026-21636/ (Markdown: https://insights.sbomify.com/CVE-2026-21636/index.md)","id":"CVE-2026-21636","markdown":"https://insights.sbomify.com/CVE-2026-21636/index.md","name":"CVE-2026-21636","record":{"aliases":["BIT-node-2026-21636","BIT-node-min-2026-21636","GHSA-7xhv-hcmf-4rfv","MINI-rwq9-8mm4-j8fq","UBUNTU-CVE-2026-21636"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Node.js runtime","requires_auth":"none","summary":"Node.js permission model flaw allows bypassing network restrictions via Unix Domain Sockets, enabling access to privileged local services.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"node.js","vendor":"nodejs"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","version":"3.0"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","ecosystems":["Bitnami"],"exploits":{"exploitdb":0,"first_seen":"2026-04-27","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-04-27T19:48:39Z","kind":"github_poc","ref":"https://github.com/Pauldechassey/CVE-2026-21636","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Security feature bypass in node","id":"CVE-2026-21636","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"nodejs:node.js","products":["nodejs:node.js"],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Denial of service in node","id":"CVE-2026-21637"},"packages":[{"ecosystem":"Bitnami","fixed":["25.3.0"],"introduced":["25.0.0"],"last_affected":[],"package":"node","purl":"pkg:bitnami/node","source":"BIT-node-2026-21636"},{"ecosystem":"Bitnami","fixed":["25.3.0"],"introduced":["25.0.0"],"last_affected":[],"package":"node-min","purl":"pkg:bitnami/node-min","source":"BIT-node-min-2026-21636"}],"prev":{"headline":"Missing authorization in UniFi Connect EV Station Lite","id":"CVE-2026-21635"},"products":["node"],"published":"2026-01-20","related":[{"cvss_score":9.8,"headline":"Security feature bypass in Node","id":"CVE-2023-32002","kev_date_added":null,"published":"2023-08-21"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2016-6303","kev_date_added":null,"published":"2016-09-16"},{"cvss_score":9.1,"headline":"Security feature bypass in Node.js","id":"CVE-2017-15896","kev_date_added":null,"published":"2017-12-11"},{"cvss_score":8.8,"headline":"Server-side request forgery in Node.js","id":"CVE-2018-7160","kev_date_added":null,"published":"2018-05-17"},{"cvss_score":8.1,"headline":"Misconfiguration in Node.js","id":"CVE-2018-12120","kev_date_added":null,"published":"2018-11-28"},{"cvss_score":7.9,"headline":"Path traversal in Node","id":"CVE-2024-21891","kev_date_added":null,"published":"2024-02-20"},{"cvss_score":7.9,"headline":"Path traversal in Node","id":"CVE-2024-21896","kev_date_added":null,"published":"2024-02-20"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-21","vendors":["nodejs"]},"summary":"Node.js permission model flaw allows bypassing network restrictions via Unix Domain Sockets, enabling access to privileged local services.","url":"https://insights.sbomify.com/CVE-2026-21636/"}