CVE-2026-45753

Symfony HtmlSanitizer UrlAttributeSanitizer omits action, formaction, poster, and cite URL-valued attributes, allowing javascript: URIs to bypass sanitization and enable XSS when forms or buttons are used. Affected: Symfony components prior to versions 6.4.40, 7.4.12, and 8.0.12. Mitigation: upgr...

CVE-2026-45074

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.1.0 until 7.4.12 and 8.0.12, Cas2Handler builds the CAS service parameter from Request::getSchemeAndHttpHost, which reflects an attacker-controlled Host header when framework.trustedhosts is n...

PT-2026-51054

Name of the Vulnerable Software and Affected Versions Symfony UX LiveComponent versions prior to 2.x Symfony UX LiveComponent versions prior to 3.x Description Methods annotated with LiveAction in symfony/ux-live-component are invokable from the browser to mutate server-side state via AJAX. The...

Interpretation Conflict

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Interpretation Conflict via the SymfonyRuntime::getInput process. An attacker can modify environment variables and enable debug mode by sendin...

Debian dsa-6317 : php-symfony - security update

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6317 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6317-1 [email protected] https://www.debian.org/securit...

[SECURITY] [DSA 6312-1] symfony security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6312-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff May 31, 2026 https://www.debian.org/security/faq -...

Improper Validation of Unsafe Equivalence in Input

Overview symfony/ux-live-component is a Live components for Symfony Affected versions of this package are vulnerable to Improper Validation of Unsafe Equivalence in Input via hydration of writable LiveProp properties typed as DateTimeInterface. An attacker can manipulate time-based application...

Server-side Request Forgery (SSRF)

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF. The NoPrivateNetworkHttpClient is designed to be a security boundary that blocks requests to private/interna...

Authentication Bypass Using an Alternate Path or Channel

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via failureforward Subrequest. An attacker could manipulate the failurepath parameter...

Improper Verification of Cryptographic Signature

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the webhook request parser. The validateSignature method extracts the...

Improper Encoding or Escaping of Output

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output via the HtmlSanitizer component that fails to properly detect and strip percent-encoded BiDi...

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Overview Affected versions of this package are vulnerable to Improper Restriction of Recursive Entity References in DTDs 'XML Entity Expansion' via Recursive Collection-Alias Expansion "Billion Laughs". Symfony\Component\Yaml\Parser resolves YAML aliases anchor during parsing. Aliases that...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the Parser::cleanup function. Symfony\Component\Yaml\Parser::cleanup strips the optional %YAML directive header, leading comments, and document start/end markers before parsing. The origina...

Cross-site Scripting (XSS)

Overview symfony/symfony is a PHP framework for web applications and a set of reusable PHP components. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the CodeExtension::fileExcerpt function in WebProfiler. An attacker can execute arbitrary JavaScript code in the...

CVE-2026-45075: HEAD Request Bypasses methods: ['GET'] Filter in #[IsGranted] / #[IsSignatureValid] / #[IsCsrfTokenValid]

More info at https://symfony.com/cve-2026-45075...

Symfony parameter injection vulnerability

Symfony is a PHP framework developed by Symfony Inc. for web and console applications, along with a set of reusable PHP components. Symfony has a parameter injection vulnerability, which arises from the Process component improperly handling special characters when escaping parameters on Windows,...

CVE-2025-64500

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Symfony's HttpFoundation component defines an object-oriented layer for the HTTP specification. Starting in version 2.0.0 and prior to version 5.4.50, 6.4.29, and 7.3.7, the Request class improperly...

CVE-2025-64500 Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Symfony's HttpFoundation component defines an object-oriented layer for the HTTP specification. Starting in version 2.0.0 and prior to version 5.4.50, 6.4.29, and 7.3.7, the Request class improperly...

CVE-2025-64500

Affected component: Symfony HttpFoundation (Symfony PHP framework). Vulnerability: The Request class improperly interprets some PATH_INFO, allowing representation of URLs without a leading slash and potentially bypassing access-control rules that assume a leading “/”. Versions and root cause: Pri...

PT-2025-46712

Name of the Vulnerable Software and Affected Versions Symfony versions 2.0.0 through 5.4.49 Symfony versions 6.0.0 through 6.4.28 Symfony versions 7.0.0 through 7.3.6 Description Symfony’s HttpFoundation component’s Request class incorrectly parses the PATH INFO value. This can result in URLs bei...