{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31816 exists.","fix":"No fix has been published for CVE-2026-31816 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-31816 is a critical authentication bypass vulnerability in budibase, published on 9 Mar 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-2026-31816 and fix it if it is affected.\n\nWhat it is: CVE-2026-31816 is a critical authentication bypass vulnerability in budibase, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31816 exists.\n\nAffected product: budibase. 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-2026-31816/ (Markdown: https://insights.sbomify.com/CVE-2026-31816/index.md)","id":"CVE-2026-31816","markdown":"https://insights.sbomify.com/CVE-2026-31816/index.md","name":"CVE-2026-31816","record":{"aliases":["GHSA-gw94-hprh-4wj8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Budibase low-code platform","requires_auth":"none","summary":"Unauthenticated attackers can bypass all authentication and authorization checks on any API endpoint by appending a specific webhook pattern to the URL query string.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"budibase","vendor":"budibase"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() middleware that protects every server-side API endpoint can be completely bypassed by appending a webhook path pattern to the query string of any request. The isWebhookEndpoint() function uses an unanchored regex that tests against ctx.request.url, which in Koa includes the full URL with query parameters. When the regex matches, the authorized() middleware immediately calls return next(), skipping all authentication, authorization, role checks, and CSRF protection. This means a completely unauthenticated, remote attacker can access any server-side API endpoint by simply appending ?/webhooks/trigger (or any webhook pattern variant) to the URL.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-03-12","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-03-12T12:44:53Z","kind":"github_poc","ref":"https://github.com/imjdl/CVE-2026-31816-rshell","stars":0,"title":"CVE-2026-31816 - Budibase Reverse Shell Exploit"},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-31816.yaml","stars":null,"title":"Budibase - Authentication Bypass"}],"tier":"weaponised"},"has_fix":false,"headline":"Budibase Universal Auth Bypass via Webhook Query Param Injection","id":"CVE-2026-31816","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"OliveTin's unsafe parsing of UniqueTrackingId can be used to write files","id":"CVE-2026-31817"},"packages":[],"prev":{"headline":"django-unicorn affected by component state manipulation via unvalidated attribute access","id":"CVE-2026-31815"},"products":["budibase"],"published":"2026-03-09","related":[{"cvss_score":10,"headline":"Budibase: Anonymous NoSQL operator injection via published-app query templates","id":"CVE-2026-54350","kev_date_added":null,"published":"2026-06-26"},{"cvss_score":9.9,"headline":"Budibase Vulnerable to Remote Code Execution via Unsafe eval() in View Filter Map Function (Budibase Cloud)","id":"CVE-2026-27702","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":9.6,"headline":"Budibase: Arbitrary file read by workspace-builder via PWA-zip symlink upload","id":"CVE-2026-54352","kev_date_added":null,"published":"2026-06-26"},{"cvss_score":9.6,"headline":"Budibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist","id":"CVE-2026-31818","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":9.6,"headline":"Budibase PWA ZIP Upload Path Traversal Allows Reading Arbitrary Server Files Including All Environment Secrets","id":"CVE-2026-30240","kev_date_added":null,"published":"2026-03-09"},{"cvss_score":9.1,"headline":"Budibase: Authentication Bypass via Unanchored Regex in Public Endpoint Matcher — Unauthenticated Access to Protected Endpoints","id":"CVE-2026-41428","kev_date_added":null,"published":"2026-04-24"},{"cvss_score":9.1,"headline":"Budibase: Unauthenticated Remote Code Execution via Webhook Trigger and Bash Automation Step","id":"CVE-2026-35216","kev_date_added":null,"published":"2026-04-03"}],"sources":[{"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":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-10","vendors":["Budibase"]},"summary":"Unauthenticated attackers can bypass all authentication and authorization checks on any API endpoint by appending a specific webhook pattern to the URL query string.","url":"https://insights.sbomify.com/CVE-2026-31816/"}