{"answers":{"affected":"8 open source packages ship an affected version, including symfony/mailtrap-mailer and symfony/symfony. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-45755 in the wild and no public exploit code.","fix":"Upgrade symfony/mailtrap-mailer to a fixed version for your release line: 7.4.12 or 8.0.12.","what":"CVE-2026-45755 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-2026-45755 and fix it if it is affected.\n\nWhat it is: CVE-2026-45755 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-2026-45755 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- symfony/mailtrap-mailer (Packagist): affected from 7.2.0; fixed in 7.4.12\n- symfony/mailtrap-mailer (Packagist): affected from 7.2.0; fixed in 7.4.12\n- symfony/mailtrap-mailer (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/mailtrap-mailer (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/symfony (Packagist): affected from 7.2.0; fixed in 7.4.12\n- symfony/symfony (Packagist): affected from 7.2.0; fixed in 7.4.12\n- symfony/symfony (Packagist): affected from 8.0.0; fixed in 8.0.12\n- symfony/symfony (Packagist): affected from 8.0.0; fixed in 8.0.12\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-2026-45755/ (Markdown: https://insights.sbomify.com/CVE-2026-45755/index.md)","id":"CVE-2026-45755","markdown":"https://insights.sbomify.com/CVE-2026-45755/index.md","name":"CVE-2026-45755","record":{"aliases":["DEBIAN-CVE-2026-45755","GHSA-59f3-vp2f-mp9w","UBUNTU-CVE-2026-45755"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Symfony Mailtrap Mailer","requires_auth":"none","summary":"Attackers can inject forged email delivery events by bypassing HMAC signature verification in the Symfony Mailtrap Mailer webhook parser.","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-347","name":"Improper Verification of Cryptographic Signature"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.12 and 8.0.12, MailtrapRequestParser::doParse() received the configured webhook secret but ignored the X-Mt-Signature HMAC header, allowing unauthenticated POST requests to inject forged Mailtrap delivery, bounce, open, click, or spam events. This issue is fixed in versions 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's Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injection","id":"CVE-2026-45755","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"sensiolabs:symfony","products":["sensiolabs:symfony"],"type":"missing_authorization","year":"2026"},"n_packages":8,"n_references":4,"next":{"headline":"Symfony: JsonPath Evaluates Attacker-Controlled Regular Expressions in match()/search() Without Limits — ReDoS","id":"CVE-2026-45756"},"packages":[{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.2.0"],"last_affected":[],"package":"symfony/mailtrap-mailer","purl":null,"source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.2.0"],"last_affected":[],"package":"symfony/mailtrap-mailer","purl":"pkg:composer/symfony/mailtrap-mailer","source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/mailtrap-mailer","purl":null,"source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/mailtrap-mailer","purl":"pkg:composer/symfony/mailtrap-mailer","source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.2.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["7.4.12"],"introduced":["7.2.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":null,"source":"GHSA-59f3-vp2f-mp9w"},{"ecosystem":"Packagist","fixed":["8.0.12"],"introduced":["8.0.0"],"last_affected":[],"package":"symfony/symfony","purl":"pkg:composer/symfony/symfony","source":"GHSA-59f3-vp2f-mp9w"}],"prev":{"headline":"Symfony: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection","id":"CVE-2026-45754"},"products":["mailtrap-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":"2026-07-14","vendors":["/mailtrap-mailer","symfony"]},"summary":"Attackers can inject forged email delivery events by bypassing HMAC signature verification in the Symfony Mailtrap Mailer webhook parser.","url":"https://insights.sbomify.com/CVE-2026-45755/"}