{"answers":{"affected":"2 open source packages ship an affected version, including thorsten/phpmyfaq. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27836 exists.","fix":"Upgrade thorsten/phpmyfaq to 4.0.18 or later.","what":"CVE-2026-27836 is a high-severity missing authorization vulnerability in Phpmyfaq Phpmyfaq, published on 27 Feb 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-2026-27836 and fix it if it is affected.\n\nWhat it is: CVE-2026-27836 is a high-severity missing authorization vulnerability in Phpmyfaq Phpmyfaq, published on 27 Feb 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-2026-27836 exists.\n\nAffected packages and fixed versions:\n- thorsten/phpmyfaq (Packagist): affected all versions; fixed in 4.0.18\n- thorsten/phpmyfaq (Packagist): affected all versions; fixed in 4.0.18\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-2026-27836/ (Markdown: https://insights.sbomify.com/CVE-2026-27836/index.md)","id":"CVE-2026-27836","markdown":"https://insights.sbomify.com/CVE-2026-27836/index.md","name":"CVE-2026-27836","record":{"aliases":["GHSA-w22q-m2fm-x9f4"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"phpMyFAQ web application","requires_auth":"none","summary":"Unauthenticated attackers can create unlimited user accounts via the WebAuthn prepare endpoint, bypassing registration restrictions in phpMyFAQ.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"phpmyfaq","vendor":"phpmyfaq"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"phpMyFAQ is an open source FAQ web application. Prior to version 4.0.18, the WebAuthn prepare endpoint (`/api/webauthn/prepare`) creates new active user accounts without any authentication, CSRF protection, captcha, or configuration checks. This allows unauthenticated attackers to create unlimited user accounts even when registration is disabled. Version 4.0.18 fixes the issue.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint","id":"CVE-2026-27836","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"phpmyfaq:phpmyfaq","products":["phpmyfaq:phpmyfaq"],"type":"missing_authorization","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Dottie vulnerable to prototype pollution bypass via non-first path segments in set() and transform()","id":"CVE-2026-27837"},"packages":[{"ecosystem":"Packagist","fixed":["4.0.18"],"introduced":["0"],"last_affected":[],"package":"thorsten/phpmyfaq","purl":null,"source":"GHSA-w22q-m2fm-x9f4"},{"ecosystem":"Packagist","fixed":["4.0.18"],"introduced":["0"],"last_affected":[],"package":"thorsten/phpmyfaq","purl":"pkg:composer/thorsten/phpmyfaq","source":"GHSA-w22q-m2fm-x9f4"}],"prev":{"headline":"wger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout data","id":"CVE-2026-27835"},"products":["phpMyFAQ"],"published":"2026-02-27","related":[{"cvss_score":9.8,"headline":"Cross-site Scripting (XSS) - Stored in thorsten/phpmyfaq","id":"CVE-2023-0310","kev_date_added":null,"published":"2023-01-15"},{"cvss_score":9.8,"headline":"Cross-site Scripting (XSS) - Reflected in thorsten/phpmyfaq","id":"CVE-2022-4407","kev_date_added":null,"published":"2022-12-11"},{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2017-11187","kev_date_added":null,"published":"2017-07-12"},{"cvss_score":9.1,"headline":"phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Throttle","id":"CVE-2026-76213","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":9.1,"headline":"phpMyFAQ before 4.1.7 WebAuthn Replay Attack via Challenge","id":"CVE-2026-76214","kev_date_added":null,"published":"2026-08-19"},{"cvss_score":9.1,"headline":"Cross-site Scripting (XSS) - DOM in thorsten/phpmyfaq","id":"CVE-2023-5316","kev_date_added":null,"published":"2023-09-30"},{"cvss_score":9.1,"headline":"Cross-site Scripting (XSS) - Stored in thorsten/phpmyfaq","id":"CVE-2023-0306","kev_date_added":null,"published":"2023-01-15"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-03","vendors":["thorsten"]},"summary":"Unauthenticated attackers can create unlimited user accounts via the WebAuthn prepare endpoint, bypassing registration restrictions in phpMyFAQ.","url":"https://insights.sbomify.com/CVE-2026-27836/"}