# Symfony vulnerabilities Source: https://junglewise.ai/threats/vendors/symfony Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 20:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/vendors/symfony.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 59 vulnerabilities in Symfony: 9 in the last 7 days and 20 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-121619, was published on 12 November 2026. 19 vulnerabilities in the last four weeks, up from none in the four before. 7 technologies have a page of their own. ## Counts - Last 7 days: 9 - Last 30 days: 20 - Last 90 days: 20 - All time: 59 (0 critical, 0 exploited in the wild) ## About Symfony A software project and organization focused on PHP development and the Symfony framework. ## Latest Symfony vulnerabilities - [CVE-2026-121619: Symfony FrameworkBundle IP spoofing via trusted_proxies](https://junglewise.ai/threats/cve-2026-121619-the-symfony-frameworkbundle-framework-trusted-proxies-option-and) (info, published 12 Nov 2026) - [CVE-2026-123824: Symfony Config XmlUtils XML external entity injection](https://junglewise.ai/threats/cve-2026-123824-the-symfony-config-component-xmlutils-parse-enables-dtd) (info, published 6 Nov 2026) - [CVE-2026-122053: Symfony Serializer ObjectNormalizer property traversal bypass](https://junglewise.ai/threats/cve-2026-122053-the-symfony-serializer-component-objectnormalizer-treats-any) (info, published 6 Nov 2026) - [CVE-2026-118515: Symfony Serializer arbitrary file handling via DataUriNormalizer](https://junglewise.ai/threats/cve-2026-118515-the-symfony-serializer-component-dataurinormalizer-handles-only) (info, published 6 Nov 2026) - [CVE-2026-123792: Symfony Yaml component ReDoS in parser and inline](https://junglewise.ai/threats/cve-2026-123792-the-symfony-yaml-components-inline-and-parser-parse-some-yaml) (info, published 6 Nov 2026) - [CVE-2026-121623: Symfony Serializer DataUriNormalizer path traversal](https://junglewise.ai/threats/cve-2026-121623-the-symfony-serializer-component-dataurinormalizer-denormalize) (info, published 6 Nov 2026) - [CVE-2026-123339: Symfony HttpKernel improper trust of forwarded headers](https://junglewise.ai/threats/cve-2026-123339-improper-trust-of-forwarded-headers-in-routerlistener) (info, published 6 Nov 2026) - [CVE-2026-118514: Symfony http-foundation HTTP method matching bypass](https://junglewise.ai/threats/cve-2026-118514-in-symfony-http-foundation-prior-to-versions-5-4-56-6-4-50-7-4) (info, published 6 Nov 2026) - [CVE-2026-123746: Symfony Security HTTP component post-authentication user checker bypass](https://junglewise.ai/threats/cve-2026-123746-the-symfony-security-http-component-authenticatormanager) (info, published 6 Nov 2026) - [CVE-2026-121949: Symfony HtmlSanitizer media URL policy bypass in srcset attributes](https://junglewise.ai/threats/cve-2026-121949-the-symfony-htmlsanitizer-component-does-not-apply-the-media-url) (info, published 5 Nov 2026) - [CVE-2026-118517: Symfony HtmlSanitizer UrlSanitizer host allowlist bypass](https://junglewise.ai/threats/cve-2026-118517-the-symfony-htmlsanitizer-component-urlsanitizer-parses-urls) (medium, CVSS 4.3, published 5 Nov 2026) - [CVE-2026-123125: Symfony Validator IpValidator SSRF in internal address filtering](https://junglewise.ai/threats/cve-2026-123125-the-symfony-validator-component-ipvalidator-incompletely) (info, published 5 Nov 2026) - [CVE-2026-123119: Symfony HttpClient NoPrivateNetworkHttpClient DNS rebinding in cached hosts](https://junglewise.ai/threats/cve-2026-123119-the-symfony-httpclient-component-noprivatenetworkhttpclient-does) (info, published 5 Nov 2026) - [CVE-2026-121971: Symfony HttpClient credential disclosure via URL override](https://junglewise.ai/threats/cve-2026-121971-the-component-scopinghttpclient-in-symfony-httpclient-merges-the) (info, published 4 Nov 2026) - [CVE-2026-121373: Symfony HtmlSanitizer meta refresh URL sanitization bypass](https://junglewise.ai/threats/cve-2026-121373-the-symfony-htmlsanitizer-component) (info, published 4 Nov 2026) - [CVE-2026-118516: Symfony Routing host-path interpretation bypass in UrlMatcher](https://junglewise.ai/threats/cve-2026-118516-the-symfony-routing-components-compiledurlmatcher-and-urlmatcher) (info, published 4 Nov 2026) - [CVE-2026-118513: Symfony X509 authentication bypass by certificate CN spoofing](https://junglewise.ai/threats/cve-2026-118513-authentication-bypass-by-spoofing-in-x509authenticator-and) (info, published 4 Nov 2026) - [CVE-2026-109449: Symfony Expression Language unbounded parser depth denial of service](https://junglewise.ai/threats/cve-2026-109449-in-symfony-expression-language-versions-prior-to-5-4-54-6-4-48-7) (info, published 15 Oct 2026) - [CVE-2026-109413: Symfony YAML stack exhaustion in inline lexer](https://junglewise.ai/threats/cve-2026-109413-in-symfony-yaml-prior-to-versions-5-4-54-6-4-45-7-4-18-and-8-1-6) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-108082: Symfony HTTP Foundation ReDoS in HeaderUtils::split()](https://junglewise.ai/threats/cve-2026-108082-symfony-is-a-php-framework-for-web-and-console-applications-and) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-49216: Symfony UX Autocomplete XSS via unescaped AJAX response data](https://junglewise.ai/threats/cve-2026-49216-symfony-ux-autocomplete-xss-via-unescaped-ajax-response-data) (medium, CVSS 4, published 17 Jul 2026) - [CVE-2026-49215: Symfony UX LiveComponent CSRF in LiveAction invocations](https://junglewise.ai/threats/cve-2026-49215-symfony-ux-livecomponent-csrf-in-liveaction-invocations) (medium, CVSS 4, published 17 Jul 2026) - [CVE-2026-49212: Symfony UX insufficient verification of data authenticity in LiveComponent](https://junglewise.ai/threats/cve-2026-49212-symfony-ux-insufficient-verification-of-data-authenticity-in) (medium, CVSS 4, published 17 Jul 2026) - [CVE-2026-49211: Symfony UX Autocomplete information exposure via unescaped LIKE wildcards](https://junglewise.ai/threats/cve-2026-49211-symfony-ux-autocomplete-information-exposure-via-unescaped-like) (medium, CVSS 4, published 17 Jul 2026) - [CVE-2026-49210: Symfony UX LiveComponent XSS via unvalidated child component tag](https://junglewise.ai/threats/cve-2026-49210-symfony-ux-livecomponent-xss-via-unvalidated-child-component-tag) (medium, CVSS 4, published 17 Jul 2026) ## Most severe Symfony vulnerabilities - [CVE-2026-55878: Symfony UX Toolkit path traversal in ux:install command](https://junglewise.ai/threats/cve-2026-55878-symfony-ux-toolkit-path-traversal-in-ux-install-command) (high, CVSS 7.8, published 8 Jul 2026) - [CVE-2026-45077: Symfony MonologBridge PHP deserialization in server:log listener](https://junglewise.ai/threats/cve-2026-45077-symfony-monologbridge-php-deserialization-in-server-log-listener) (high, CVSS 4, published 14 Jul 2026) - [CVE-2026-45067: Symfony Mime CRLF injection in Address constructor](https://junglewise.ai/threats/cve-2026-45067-symfony-mime-crlf-injection-in-address-constructor) (high, CVSS 4, published 14 Jul 2026) - [CVE-2026-108082: Symfony HTTP Foundation ReDoS in HeaderUtils::split()](https://junglewise.ai/threats/cve-2026-108082-symfony-is-a-php-framework-for-web-and-console-applications-and) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-109413: Symfony YAML stack exhaustion in inline lexer](https://junglewise.ai/threats/cve-2026-109413-in-symfony-yaml-prior-to-versions-5-4-54-6-4-45-7-4-18-and-8-1-6) (high, CVSS 4, published 15 Oct 2026) - [CVE-2026-45063: Symfony X509Authenticator authentication bypass via spoofing](https://junglewise.ai/threats/cve-2026-45063-symfony-x509authenticator-authentication-bypass-via-spoofing) (high, CVSS 4, published 14 Jul 2026) - [CVE-2026-48489: Symfony firewall bypass via failure_forward subrequest in security-http](https://junglewise.ai/threats/cve-2026-48489-symfony-firewall-bypass-via-failure-forward-subrequest-in) (high, CVSS 0, published 14 Jul 2026) - [CVE-2026-45065: Symfony open redirect in UrlGenerator route validation](https://junglewise.ai/threats/cve-2026-45065-symfony-open-redirect-in-urlgenerator-route-validation) (medium, CVSS 6.1, published 14 Jul 2026) - [CVE-2026-55877: Symfony UX Icons cross-site scripting via unsanitized SVG content](https://junglewise.ai/threats/cve-2026-55877-symfony-ux-icons-cross-site-scripting-via-unsanitized-svg-content) (medium, CVSS 6.1, published 8 Jul 2026) - [CVE-2026-118517: Symfony HtmlSanitizer UrlSanitizer host allowlist bypass](https://junglewise.ai/threats/cve-2026-118517-the-symfony-htmlsanitizer-component-urlsanitizer-parses-urls) (medium, CVSS 4.3, published 5 Nov 2026) ## Vulnerabilities per week 19 vulnerabilities in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 3 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 16 | 0 | 0 | | 9 Nov 2026 | 1 | 0 | 0 | ## Symfony technologies - [Symfony HtmlSanitizer](https://junglewise.ai/threats/technologies/htmlsanitizer): 9 vulnerabilities - [Symfony Yaml Component](https://junglewise.ai/threats/technologies/yaml): 8 vulnerabilities - [Symfony Security HTTP](https://junglewise.ai/threats/technologies/security-http): 5 vulnerabilities - [Symfony UX Live Component](https://junglewise.ai/threats/technologies/ux-live-component): 4 vulnerabilities - [Symfony Http Foundation](https://junglewise.ai/threats/technologies/http-foundation): 3 vulnerabilities - [Symfony HttpClient](https://junglewise.ai/threats/technologies/httpclient): 3 vulnerabilities - [Symfony Mime](https://junglewise.ai/threats/technologies/mime): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Symfony vulnerabilities", https://junglewise.ai/threats/vendors/symfony, 12 November 2026.