{"answers":{"affected":"16 open source packages ship an affected version, including symfony/mailjet-mailer, symfony/lox24-notifier and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45754 in the wild and no public exploit code.","fix":"Upgrade symfony/mailjet-mailer to a fixed version for your release line: 6.4.40, 7.4.12 or 8.0.12.","what":"CVE-2026-45754 is a medium-severity missing authorization 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-2026-45754 and fix it if it is affected.\n\nWhat it is: CVE-2026-45754 is a medium-severity missing authorization 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-2026-45754 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/mailjet-mailer (Packagist): affected from 6.4.0; fixed in 6.4.40\n- symfony/mailjet-mailer (Packagist): affected from 6.4.0; fixed in 6.4.40\n- symfony/mailjet-mailer (Packagist): affected from 7.0.0; fixed in 7.4.12\n- symfony/mailjet-mailer (Packagist): affected from 7.0.0; fixed in 7.4.12\n- symfony/mailjet-mailer (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/mailjet-mailer (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/lox24-notifier (Packagist): affected from 7.1.0; fixed in 7.4.12\n- symfony/lox24-notifier (Packagist): affected from 7.1.0; fixed in 7.4.12\n- symfony/lox24-notifier (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/lox24-notifier (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/symfony (Packagist): affected from 6.4.0; fixed in 6.4.40\n- symfony/symfony (Packagist): affected from 6.4.0; 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-2026-45754/ (Markdown: https://insights.sbomify.com/CVE-2026-45754/index.md)","id":"CVE-2026-45754","markdown":"https://insights.sbomify.com/CVE-2026-45754/index.md","name":"CVE-2026-45754","record":{"aliases":["DEBIAN-CVE-2026-45754","GHSA-64hg-93w9-fc35","UBUNTU-CVE-2026-45754"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Symfony mailer bridge","requires_auth":"none","summary":"Attackers can inject forged webhook events into Symfony Mailjet and LOX24 bridges because the configured secrets are not verified, allowing unauthenticated data manipulation.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"symfony","vendor":"sensiolabs"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"},{"id":"CWE-287","name":"Improper Authentication"}],"description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged Mailjet and LOX24 event payloads. This issue is fixed in versions 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: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection","id":"CVE-2026-45754","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"missing_authorization","year":"2026"},"n_packages":16,"n_references":6,"next":{"headline":"Symfony's Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injection","id":"CVE-2026-45755"},"packages":[{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.1.0"],"last_affected":[],"package":"symfony/lox24-notifier","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.1.0"],"last_affected":[],"package":"symfony/lox24-notifier","purl":"pkg:composer/symfony/lox24-notifier","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/lox24-notifier","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/lox24-notifier","purl":"pkg:composer/symfony/lox24-notifier","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.4.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.4.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":"pkg:composer/symfony/mailjet-mailer","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":"pkg:composer/symfony/mailjet-mailer","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/mailjet-mailer","purl":"pkg:composer/symfony/mailjet-mailer","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.4.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["6.4.40"],"introduced":["6.4.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-64hg-93w9-fc35"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-64hg-93w9-fc35"}],"prev":{"headline":"Symfony's HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite — `javascript`: URI Survives Sanitization (XSS)","id":"CVE-2026-45753"},"products":["lox24-notifier","mailjet-mailer","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)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-21","vendors":["symfony"]},"summary":"Attackers can inject forged webhook events into Symfony Mailjet and LOX24 bridges because the configured secrets are not verified, allowing unauthenticated data manipulation.","url":"https://insights.sbomify.com/CVE-2026-45754/"}