PT-2026-51053

Name of the Vulnerable Software and Affected Versions symfony/ux-live-component versions prior to 2.x and 3.x Description An issue exists in the SymfonyUXLiveComponentLiveComponentHydrator where the HMAC Hash-based Message Authentication Code used to protect read-only props and the propsFromParen...

PT-2026-51055

Name of the Vulnerable Software and Affected Versions symfony/ux-autocomplete versions prior to 2.x symfony/ux-autocomplete versions prior to 3.x Description The Stimulus controller in the software renders AJAX response items into a dropdown by interpolating the text field directly into HTML...

PT-2026-51051

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 The createHtml function in SymfonyUXLiveComponentUtilChildComponentPartialRenderer interpolates the $childTag variable directly into the...

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...

PT-2026-51050

Name of the Vulnerable Software and Affected Versions Symfony UX Live Component versions prior to 2.x Symfony UX Live Component versions prior to 3.x Description The BatchActionController:: invoke function iterates over a client-supplied actions array and issues a full HttpKernel sub-request for...

GHSA-H5X3-XFC9-M39H Symfony: UrlGenerator Dot-Segment Encoding Skips Every Other Chained `../` or `./` → Generated URL Collapses Off-Route Under RFC 3986 Normalization

Description Symfony\Component\Routing\Generator\UrlGenerator::doGenerate percent-encodes . and .. path segments so that the generated URL still resolves to the originating route after RFC 3986 §5.2.4 dot-segment removal which strict RFC-3986 consumers — routers, reverse proxies, HTTP clients —...

GHSA-RRJ9-5Q2J-4GVR Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade

Description Symfony\Component\Mailer\Bridge\Mailomat\Webhook\MailomatRequestParser::validateSignature parses the X-MOM-Webhook-Signature request header as algo=signature and passes the wire-supplied $algo directly to hashhmac when verifying the request against the configured webhook secret. The...

GHSA-6H46-9JF5-Q59X Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes

Description When a firewall is configured with form-login or any authenticator using DefaultAuthenticationFailureHandler and the failureforward: true option, the handler reads the failurepath parameter from the failing login request and uses it as the path of an internal subrequest dispatched...

Symfony: Security Firewall Bypass via failure_forward Subrequest: Unauthenticated Access to access_control-Protected GET Routes

Description When a firewall is configured with form-login or any authenticator using DefaultAuthenticationFailureHandler and the failureforward: true option, the handler reads the failurepath parameter from the failing login request and uses it as the path of an internal subrequest dispatched...

GHSA-X5QJ-865H-MGVM Symfony: HtmlSanitizer UrlAttributeSanitizer Misses URL Attributes

Description Symfony\Component\HtmlSanitizer\Visitor\AttributeSanitizer\UrlAttributeSanitizer::getSupportedAttributes enumerates the attribute names whose values are scrubbed through UrlSanitizer::sanitize scheme and host allow-lists, javascript: rejection, BiDi check, etc.. The list is 'src',...

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...

Interpretation Conflict

Overview symfony/runtime is an Enables decoupling PHP applications from global state 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 sending specially crafte...

GHSA-FQC7-9XJW-JRH3 SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch

Description CVE-2024-50340 GHSA-x8vp-gf4q-mw5j addressed an issue where, with registerargcargv=On, a crafted query string let an unauthenticated GET change the kernel environment and debug flag by feeding --env/--no-debug through $SERVER'argv'. The fix shipped in symfony/runtime 5.4.46 / 6.4.14 /...

PT-2026-48343

Name of the Vulnerable Software and Affected Versions Symfony versions 5.4.46 through 5.4.51 Symfony versions 6.4.14 through 6.4.39 Symfony versions 7.1.7 through 7.4.11 Symfony versions 8.0.12 Description An issue exists where an unauthenticated user can modify the kernel environment and debug...

CVE-2026-41498

Kimai is an open-source time tracking application. Prior to version 2.54.0, the Team API endpoints use IsGranted'editteam' instead of IsGranted'edit', 'team', causing Symfony TeamVoter to abstain from voting. This removes entity-level ownership checks on team operations, allowing any user with th...

Symfony and Symfony HTML Sanitizer Component 6.1.x < 6.4.40 / 7.0.x < 7.4.12 / 8.0.x 8.0.12 Multiple Vulnerabilities

The version of Symfony and/or the Symfony HTML Sanitizer Component installed on the remote host is prior to 6.1.x prior to 6.4.40, 7.0.x prior to 7.4.12, 8.0.x prior to 8.0.12. and, therefore, affected by multiple vulnerabilities: - A visual spoofing vulnerability exists in Symfony Component...

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 6317-1] symfony security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6317-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 01, 2026 https://www.debian.org/security/faq -...

Debian dsa-6312 : php-symfony - security update

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6312 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6312-1 [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 -...