{"answers":{"affected":"13 open source packages ship an affected version, including symfony/security, symfony and symfony/security-http. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-5275 in the wild and no public exploit code.","fix":"Upgrade symfony/security to a fixed version for your release line: 4.4.7 or 5.0.7.","what":"CVE-2020-5275 is a high-severity authentication bypass vulnerability in Sensiolabs Symfony, published on 30 Mar 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-5275 and fix it if it is affected.\n\nWhat it is: CVE-2020-5275 is a high-severity authentication bypass vulnerability in Sensiolabs Symfony, published on 30 Mar 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-5275 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/security (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/security (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/security (Packagist): affected from 5.0.0; fixed in 5.0.7\n- symfony/security (Packagist): affected from 5.0.0; fixed in 5.0.7\n- symfony (Bitnami): affected from 4.4.0; fixed in 4.4.7, 5.0.7\n- symfony/security-http (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/security-http (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/security-http (Packagist): affected from 5.0.0; fixed in 5.0.7\n- symfony/security-http (Packagist): affected from 5.0.0; fixed in 5.0.7\n- symfony/symfony (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/symfony (Packagist): affected from 4.4.0; fixed in 4.4.7\n- symfony/symfony (Packagist): affected from 5.0.0; fixed in 5.0.7\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-2020-5275/ (Markdown: https://insights.sbomify.com/CVE-2020-5275/index.md)","id":"CVE-2020-5275","markdown":"https://insights.sbomify.com/CVE-2020-5275/index.md","name":"CVE-2020-5275","record":{"aliases":["BIT-symfony-2020-5275","DEBIAN-CVE-2020-5275","GHSA-g4m9-5hpf-hx72"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Symfony security library","requires_auth":"low_privilege","summary":"Attackers can bypass access controls in Symfony applications using the unanimous firewall strategy due to premature access decision granting.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-285","name":"Improper Authorization"}],"description":"In symfony/security-http before versions 4.4.7 and 5.0.7, when a `Firewall` checks access control rule, it iterate overs each rule's attributes and stops as soon as the accessDecisionManager decides to grant access on the attribute, preventing the check of next attributes that should have been take into account in an unanimous strategy. The accessDecisionManager is now called with all attributes at once, allowing the unanimous strategy being applied on each attribute. This issue is patched in versions 4.4.7 and 5.0.7.","ecosystems":["Bitnami","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":"Firewall configured with unanimous strategy was not actually unanimous in symfony/security-http","id":"CVE-2020-5275","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"auth_bypass","year":"2020"},"n_packages":13,"n_references":3,"next":{"headline":"Reflected XSS on AdminCarts page of PrestaShop","id":"CVE-2020-5276"},"packages":[{"ecosystem":"Bitnami","fixed":["4.4.7","5.0.7"],"introduced":["4.4.0","5.0.0"],"last_affected":[],"package":"symfony","purl":"pkg:bitnami/symfony","source":"BIT-symfony-2020-5275"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/security","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/security","purl":"pkg:composer/symfony/security","source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/security-http","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/security-http","purl":"pkg:composer/symfony/security-http","source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["4.4.7"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-g4m9-5hpf-hx72"},{"ecosystem":"Packagist","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-g4m9-5hpf-hx72"}],"prev":{"headline":"Exceptions displayed in non-debug configurations in Symfony","id":"CVE-2020-5274"},"products":["symfony"],"published":"2020-03-30","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":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"2024-08-04","vendors":["symfony"]},"summary":"Attackers can bypass access controls in Symfony applications using the unanimous firewall strategy due to premature access decision granting.","url":"https://insights.sbomify.com/CVE-2020-5275/"}