{"answers":{"affected":"24 open source packages ship an affected version, including symfony/security, symfony/security-core and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-11407 in the wild and no public exploit code.","fix":"Upgrade symfony/security to a fixed version for your release line: 2.8.37, 3.3.17, 3.4.7 or 4.0.7.","what":"CVE-2018-11407 is a critical authentication bypass vulnerability in Sensiolabs Symfony, published on 13 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-11407 and fix it if it is affected.\n\nWhat it is: CVE-2018-11407 is a critical authentication bypass vulnerability in Sensiolabs Symfony, published on 13 Jun 2018. 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-2018-11407 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/security (Packagist): affected from 2.8.0; fixed in 2.8.37\n- symfony/security (Packagist): affected from 2.8.0; fixed in 2.8.37\n- symfony/security (Packagist): affected from 3.0.0; fixed in 3.3.17\n- symfony/security (Packagist): affected from 3.0.0; fixed in 3.3.17\n- symfony/security (Packagist): affected from 3.4.0; fixed in 3.4.7\n- symfony/security (Packagist): affected from 3.4.0; fixed in 3.4.7\n- symfony/security (Packagist): affected from 4.0.0; fixed in 4.0.7\n- symfony/security (Packagist): affected from 4.0.0; fixed in 4.0.7\n- symfony/security-core (Packagist): affected from 2.8.0; fixed in 2.8.37\n- symfony/security-core (Packagist): affected from 2.8.0; fixed in 2.8.37\n- symfony/security-core (Packagist): affected from 3.0.0; fixed in 3.3.17\n- symfony/security-core (Packagist): affected from 3.0.0; fixed in 3.3.17\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-2018-11407/ (Markdown: https://insights.sbomify.com/CVE-2018-11407/index.md)","id":"CVE-2018-11407","markdown":"https://insights.sbomify.com/CVE-2018-11407/index.md","name":"CVE-2018-11407","record":{"aliases":["DEBIAN-CVE-2018-11407","GHSA-35c5-28pg-2qg4","UBUNTU-CVE-2018-11407","USN-4836-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Symfony PHP framework","requires_auth":"none","summary":"Remote attackers can bypass authentication in Symfony's Ldap component by logging in with a null password and valid username.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a \"null\" password and valid username, which triggers an unauthenticated bind.  NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.","ecosystems":["Packagist"],"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":"Symfony Authentication Bypass","id":"CVE-2018-11407","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"auth_bypass","year":"2018"},"n_packages":24,"n_references":1,"next":{"headline":"Symfony Open Redirect","id":"CVE-2018-11408"},"packages":[{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/security-core","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/security-core","purl":"pkg:composer/symfony/security-core","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/security-core","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/security-core","purl":"pkg:composer/symfony/security-core","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/security-core","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/security-core","purl":"pkg:composer/symfony/security-core","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/security-core","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/security-core","purl":"pkg:composer/symfony/security-core","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["2.8.37"],"introduced":["2.8.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.3.17"],"introduced":["3.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["3.4.7"],"introduced":["3.4.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-35c5-28pg-2qg4"},{"ecosystem":"Packagist","fixed":["4.0.7"],"introduced":["4.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-35c5-28pg-2qg4"}],"prev":{"headline":"Symfony CSRF Token Fixation","id":"CVE-2018-11406"},"products":["n/a"],"published":"2018-06-13","related":[{"cvss_score":9.8,"headline":"Improper Input Validation in Symfony","id":"CVE-2019-11325","kev_date_added":null,"published":"2019-11-21"},{"cvss_score":9.8,"headline":"Symfony Incorrect Access Control","id":"CVE-2017-11365","kev_date_added":null,"published":"2019-05-23"},{"cvss_score":9.8,"headline":"Invalid HTTP method overrides allow possible XSS or other attacks in Symfony","id":"CVE-2019-10913","kev_date_added":null,"published":"2019-05-16"},{"cvss_score":9.8,"headline":"Symfony Authentication Bypass","id":"CVE-2016-2403","kev_date_added":null,"published":"2017-02-07"},{"cvss_score":9.1,"headline":"Symfony: Identity Spoofing via Unanchored DN Regex in X509Authenticator","id":"CVE-2026-45063","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":8.8,"headline":"Symfony: OidcTokenHandler Accepts JWTs Missing aud/iss/exp Claims","id":"CVE-2026-45069","kev_date_added":null,"published":"2026-07-14"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Remote attackers can bypass authentication in Symfony's Ldap component by logging in with a null password and valid username.","url":"https://insights.sbomify.com/CVE-2018-11407/"}