Changelog (v6.4.39...v6.4.40)

• security #cve-2026-46626 [Runtime] Fix CVE-2024-50340 patch bypass by gating argv on $_SERVER['QUERY_STRING'] (@nicolas-grekas)
• security #cve-2026-47212 [Notifier][Twilio] Reject webhooks with missing or invalid HMAC signature (@nicolas-grekas)
• security #cve-2026-45753 [HtmlSanitizer] Sanitize URLs in action, formaction, poster and cite attributes (@nicolas-grekas)
• security #cve-2026-45754 [Mailer][Mailjet] Reject webhooks with missing or invalid Basic credentials (@alexandre-daubois)
• security #cve-2026-45072 [TwigBridge] Fix XSS issue in CodeExtension::fileExcerpt() (@nicolas-grekas)
• security #cve-2026-45064 [HtmlSanitizer] Reject BiDi override characters and percent-encode spaces in URLs (@nicolas-grekas)
• security #cve-2026-45066 [HtmlSanitizer] Fix allowLinkHosts/allowMediaHosts bypass via URL parser differentials and <area> misclassification (@alexandre-daubois)
• security #cve-2026-45069 [Security] Add missing claims in OidcTokenHandler (@alexandre-daubois)
• bug [DomCrawler] Fix ChoiceFormField::addChoice() clobbering values on multi-selects #64258 [DomCrawler] Fix ChoiceFormField::addChoice() clobbering values on multi-selects (@nicolas-grekas)
• bug [HttpKernel] Preserve named-attribute override on Request/Session value resolvers #64214 [HttpKernel] Preserve named-attribute override on Request/Session value resolvers (@nicolas-grekas)
• security #cve-2026-45305 [Yaml] Harden the Parser::cleanup() regexes against catastrophic backtracking (@nicolas-grekas)
• security #cve-2026-45304 [Yaml] Bound collection-alias resolution in the parser (@nicolas-grekas)
• security #cve-2026-45133 [Yaml] Bound recursion depth in the parser (@nicolas-grekas)
• security #cve-2026-45071 [DomCrawler] Fix XXE in addXmlContent() by not enabling validateOnParse (@alexandre-daubois)
• security #cve-2026-45068 [Mailer] Add end-of-options separator before recipients in SendmailTransport; reject addresses starting with a dash (@alexandre-daubois)
• security #cve-2026-45063 [Security] Anchor emailAddress regex to RDN boundary in X509Authenticator (@alexandre-daubois)
• security #cve-2026-45065 [Routing] Fix regex alternation anchoring in UrlGenerator requirement validation (@alexandre-daubois)
• security #cve-2026-45067 [Mime] Reject email addresses containing line breaks in Address (@alexandre-daubois)
• security #cve-2026-45073 [Cache] Validate the prefix given to AbstractAdapter::clear() (@nicolas-grekas)
• security #cve-2026-45077 [MonologBridge] Bind server:log to localhost by default (@nicolas-grekas)