{"answers":{"affected":"8 open source packages ship an affected version, including symfony/http-foundation, symfony/routing and symfony/security. It affects 1 product.","exploited":"There is no known exploitation of CVE-2012-6431 in the wild and no public exploit code.","fix":"Upgrade symfony/http-foundation to 2.0.19 or later.","what":"CVE-2012-6431 is a medium-severity vulnerability in Sensiolabs Symfony, published on 27 Dec 2012. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2012-6431 and fix it if it is affected.\n\nWhat it is: CVE-2012-6431 is a medium-severity vulnerability in Sensiolabs Symfony, published on 27 Dec 2012. 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-2012-6431 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/http-foundation (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/http-foundation (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/routing (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/routing (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/security (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/security (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/symfony (Packagist): affected from 2.0.0; fixed in 2.0.19\n- symfony/symfony (Packagist): affected from 2.0.0; fixed in 2.0.19\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-2012-6431/ (Markdown: https://insights.sbomify.com/CVE-2012-6431/index.md)","id":"CVE-2012-6431","markdown":"https://insights.sbomify.com/CVE-2012-6431/index.md","name":"CVE-2012-6431","record":{"aliases":["GHSA-83c3-qx27-2rwr"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP web framework","requires_auth":"none","summary":"Remote attackers can bypass URI restrictions in Symfony by using doubly encoded strings, potentially accessing protected resources.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":6.4,"severity":"medium","source":"nvd","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","version":"2.0"},"cwes":[{"id":"CWE-264","name":null}],"description":"Symfony 2.0.x before 2.0.20 does not process URL encoded data consistently within the Routing and Security components, which allows remote attackers to bypass intended URI restrictions via a doubly encoded string.","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 Allows URI Restrictions Bypass Via Double-Encoded String","id":"CVE-2012-6431","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"security_feature_bypass","year":"2012"},"n_packages":8,"n_references":1,"next":{"headline":"Symfony Access Control Vulnerability","id":"CVE-2012-6432"},"packages":[{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/http-foundation","purl":null,"source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/http-foundation","purl":"pkg:composer/symfony/http-foundation","source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/routing","purl":null,"source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/routing","purl":"pkg:composer/symfony/routing","source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-83c3-qx27-2rwr"},{"ecosystem":"Packagist","fixed":["2.0.19"],"introduced":["2.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-83c3-qx27-2rwr"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2012-6430"},"products":["n/a"],"published":"2012-12-27","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":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":"2024-09-17","vendors":["n/a"]},"summary":"Remote attackers can bypass URI restrictions in Symfony by using doubly encoded strings, potentially accessing protected resources.","url":"https://insights.sbomify.com/CVE-2012-6431/"}