{"answers":{"affected":"16 open source packages ship an affected version, including symfony/dom-crawler and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45071 in the wild and no public exploit code.","fix":"Upgrade symfony/dom-crawler to a fixed version for your release line: 5.4.52, 6.4.40, 7.4.12 or 8.0.12.","what":"CVE-2026-45071 is a high-severity 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-2026-45071 and fix it if it is affected.\n\nWhat it is: CVE-2026-45071 is a high-severity 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-2026-45071 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/dom-crawler (Packagist): affected all versions; fixed in 5.4.52\n- symfony/dom-crawler (Packagist): affected all versions; fixed in 5.4.52\n- symfony/dom-crawler (Packagist): affected from 6.0.0; fixed in 6.4.40\n- symfony/dom-crawler (Packagist): affected from 6.0.0; fixed in 6.4.40\n- symfony/dom-crawler (Packagist): affected from 7.0.0; fixed in 7.4.12\n- symfony/dom-crawler (Packagist): affected from 7.0.0; fixed in 7.4.12\n- symfony/dom-crawler (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/dom-crawler (Packagist): affected from 8.0.0; 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; fixed in 6.4.40\n- symfony/symfony (Packagist): affected from 6.0.0; 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-2026-45071/ (Markdown: https://insights.sbomify.com/CVE-2026-45071/index.md)","id":"CVE-2026-45071","markdown":"https://insights.sbomify.com/CVE-2026-45071/index.md","name":"CVE-2026-45071","record":{"aliases":["DEBIAN-CVE-2026-45071","GHSA-x6g4-fwcc-jj8w","MINI-8w79-696m-9683","MINI-qqhp-7395-ww4c","MINI-xvp6-83ch-vmpr","UBUNTU-CVE-2026-45071"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Symfony DomCrawler","requires_auth":"none","summary":"An attacker can read local files by supplying malicious XML to the DomCrawler component due to enabled external entity resolution.","user_interaction":"not_required","vuln_class":"xxe"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"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, Crawler::addXmlContent() set DOMDocument::$validateOnParse = true before loadXML(), re-enabling external entity resolution and allowing attacker-supplied XML to expand file:// entities such as local files. 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":"2026-08-29","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-29T23:14:45Z","kind":"github_poc","ref":"https://github.com/bozellqp/zk-xml-probe","stars":0,"title":"Static XML fixtures for authorized bug bounty testing of XML parser behaviour (CVE-2026-45071)."}],"tier":"poc_unverified"},"has_fix":true,"headline":"Symfony: XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse = true","id":"CVE-2026-45071","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"xxe","year":"2026"},"n_packages":16,"n_references":6,"next":{"headline":"Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","id":"CVE-2026-45072"},"packages":[{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/dom-crawler","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/dom-crawler","purl":"pkg:composer/symfony/dom-crawler","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":"pkg:composer/symfony/dom-crawler","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":"pkg:composer/symfony/dom-crawler","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/dom-crawler","purl":"pkg:composer/symfony/dom-crawler","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["5.4.52"],"introduced":["0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-x6g4-fwcc-jj8w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-x6g4-fwcc-jj8w"}],"prev":{"headline":"Symfony: Email Header Injection via Non-Token Characters in Mime Parameter Names","id":"CVE-2026-45070"},"products":["dom-crawler","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":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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["symfony"]},"summary":"An attacker can read local files by supplying malicious XML to the DomCrawler component due to enabled external entity resolution.","url":"https://insights.sbomify.com/CVE-2026-45071/"}