{"answers":{"affected":"9 open source packages ship an affected version, including symfony/error-handler, symfony and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-5274 in the wild and no public exploit code.","fix":"Upgrade symfony/error-handler to a fixed version for your release line: 4.4.4 or 5.0.4.","what":"CVE-2020-5274 is a medium-severity 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-2020-5274 and fix it if it is affected.\n\nWhat it is: CVE-2020-5274 is a medium-severity 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-2020-5274 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/error-handler (Packagist): affected from 4.4.0; fixed in 4.4.4\n- symfony/error-handler (Packagist): affected from 4.4.0; fixed in 4.4.4\n- symfony/error-handler (Packagist): affected from 5.0.0; fixed in 5.0.4\n- symfony/error-handler (Packagist): affected from 5.0.0; fixed in 5.0.4\n- symfony (Bitnami): affected from 4.4.0; fixed in 4.4.4, 5.0.4\n- symfony/symfony (Packagist): affected from 4.4.0; fixed in 4.4.4\n- symfony/symfony (Packagist): affected from 4.4.0; fixed in 4.4.4\n- symfony/symfony (Packagist): affected from 5.0.0; fixed in 5.0.4\n- symfony/symfony (Packagist): affected from 5.0.0; fixed in 5.0.4\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-2020-5274/ (Markdown: https://insights.sbomify.com/CVE-2020-5274/index.md)","id":"CVE-2020-5274","markdown":"https://insights.sbomify.com/CVE-2020-5274/index.md","name":"CVE-2020-5274","record":{"aliases":["BIT-symfony-2020-5274","DEBIAN-CVE-2020-5274","GHSA-m884-279h-32v2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Symfony PHP framework","requires_auth":"low_privilege","summary":"Attackers can view sensitive exception details and stack traces in production environments due to improper escaping and display logic in Symfony's ErrorHandler.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-209","name":"Generation of Error Message Containing Sensitive Information"}],"description":"In Symfony before versions 5.0.5 and 4.4.5, some properties of the Exception were not properly escaped when the `ErrorHandler` rendered it stacktrace. In addition, the stacktrace were displayed even in a non-debug configuration. The ErrorHandler now escape alls properties of the exception, and the stacktrace is only display in debug configuration. This issue is patched in symfony/http-foundation versions 4.4.5 and 5.0.5","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":"Exceptions displayed in non-debug configurations in Symfony","id":"CVE-2020-5274","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"information_disclosure","year":"2020"},"n_packages":9,"n_references":3,"next":{"headline":"Firewall configured with unanimous strategy was not actually unanimous in symfony/security-http","id":"CVE-2020-5275"},"packages":[{"ecosystem":"Bitnami","fixed":["4.4.4","5.0.4"],"introduced":["4.4.0","5.0.0"],"last_affected":[],"package":"symfony","purl":"pkg:bitnami/symfony","source":"BIT-symfony-2020-5274"},{"ecosystem":"Packagist","fixed":["4.4.4"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/error-handler","purl":null,"source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["4.4.4"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/error-handler","purl":"pkg:composer/symfony/error-handler","source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["5.0.4"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/error-handler","purl":null,"source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["5.0.4"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/error-handler","purl":"pkg:composer/symfony/error-handler","source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["4.4.4"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["4.4.4"],"introduced":["4.4.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["5.0.4"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-m884-279h-32v2"},{"ecosystem":"Packagist","fixed":["5.0.4"],"introduced":["5.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-m884-279h-32v2"}],"prev":{"headline":"Stored XSS with custom URLs in PrestaShop module ps_linklist","id":"CVE-2020-5273"},"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 view sensitive exception details and stack traces in production environments due to improper escaping and display logic in Symfony's ErrorHandler.","url":"https://insights.sbomify.com/CVE-2020-5274/"}