{"answers":{"affected":"16 open source packages ship an affected version, including symfony/security-http and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45063 in the wild and no public exploit code.","fix":"Upgrade symfony/security-http to a fixed version for your release line: 5.4.52, 6.4.40, 7.4.12 or 8.0.12.","what":"CVE-2026-45063 is a critical authentication bypass vulnerability in Sensiolabs Symfony, published on 14 Jul 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-2026-45063 and fix it if it is affected.\n\nWhat it is: CVE-2026-45063 is a critical authentication bypass vulnerability in Sensiolabs Symfony, published on 14 Jul 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-2026-45063 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/security-http (Packagist): affected all versions; fixed in 5.4.52\n- symfony/security-http (Packagist): affected all versions; fixed in 5.4.52\n- symfony/security-http (Packagist): affected from 6.0.0-BETA1; fixed in 6.4.40\n- symfony/security-http (Packagist): affected from 6.0.0-BETA1; fixed in 6.4.40\n- symfony/security-http (Packagist): affected from 7.0.0-BETA1; fixed in 7.4.12\n- symfony/security-http (Packagist): affected from 7.0.0-BETA1; fixed in 7.4.12\n- symfony/security-http (Packagist): affected from 8.0.0-BETA1; fixed in 8.0.12\n- symfony/security-http (Packagist): affected from 8.0.0-BETA1; fixed in 8.0.12\n- symfony/symfony (Packagist): affected all versions; fixed in 5.4.52\n- symfony/symfony (Packagist): affected all versions; fixed in 5.4.52\n- symfony/symfony (Packagist): affected from 6.0.0-BETA1; fixed in 6.4.40\n- symfony/symfony (Packagist): affected from 6.0.0-BETA1; fixed in 6.4.40\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-2026-45063/ (Markdown: https://insights.sbomify.com/CVE-2026-45063/index.md)","id":"CVE-2026-45063","markdown":"https://insights.sbomify.com/CVE-2026-45063/index.md","name":"CVE-2026-45063","record":{"aliases":["DEBIAN-CVE-2026-45063","GHSA-ph86-p8f6-f9r2","UBUNTU-CVE-2026-45063"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP web framework","requires_auth":"none","summary":"Attackers can spoof identities and authenticate as victims by exploiting an unanchored regex in the X509Authenticator component of the Symfony framework.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, X509Authenticator extracts the user identifier from $_SERVER['SSL_CLIENT_S_DN'] with an unanchored regex that matches emailAddress= anywhere in the distinguished name, allowing an attacker with a trusted certificate containing emailAddress=victim inside another RDN value such as CN to authenticate as the victim. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.","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: Identity Spoofing via Unanchored DN Regex in X509Authenticator","id":"CVE-2026-45063","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"auth_bypass","year":"2026"},"n_packages":16,"n_references":6,"next":{"headline":"Symfony: HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing","id":"CVE-2026-45064"},"packages":[{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0-BETA1"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-ph86-p8f6-f9r2"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0-BETA1"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-ph86-p8f6-f9r2"}],"prev":{"headline":"FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files","id":"CVE-2026-45062"},"products":["symfony"],"published":"2026-07-14","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-2018-11407","kev_date_added":null,"published":"2018-06-13"},{"cvss_score":9.8,"headline":"Symfony Authentication Bypass","id":"CVE-2016-2403","kev_date_added":null,"published":"2017-02-07"},{"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-14","vendors":["symfony"]},"summary":"Attackers can spoof identities and authenticate as victims by exploiting an unanchored regex in the X509Authenticator component of the Symfony framework.","url":"https://insights.sbomify.com/CVE-2026-45063/"}