{"id":172767,"date":"2026-05-20T12:55:54","date_gmt":"2026-05-20T10:55:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-firefox-151"},"modified":"2026-05-20T12:55:54","modified_gmt":"2026-05-20T10:55:58","slug":"reliz-firefox-151","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-firefox-151","title":{"rendered":"Vyd\u00e1n\u00ed Firefox 151","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n webov\u00fd prohl\u00ed\u017ee\u010d Firefox 151 a byly vytvo\u0159eny aktualizace pro p\u0159edchoz\u00ed v\u011btve s dlouhodobou podporou \u2014 140.11.0 a 115.36.0. V nejbli\u017e\u0161\u00ed dob\u011b bude do f\u00e1ze beta testov\u00e1n\u00ed p\u0159evedena v\u011btev Firefox 152, jej\u00ed\u017e vyd\u00e1n\u00ed je napl\u00e1nov\u00e1no na 16. \u010dervna.     <\/p>\n<p>Hlavn\u00ed novinky ve Firefoxu 151 (1, 2, 3, 4):  <\/p>\n<ul>\n<li class=\"l\"> Bylo aktualizov\u00e1no zobrazen\u00ed str\u00e1nky p\u0159i otev\u0159en\u00ed nov\u00e9 karty (logo bylo p\u0159esunuto do st\u0159edu, \u0159\u00e1dek hled\u00e1n\u00ed byl posunut dol\u016f a bylo p\u0159id\u00e1no pozad\u00ed, kter\u00e9 lze zm\u011bnit v nastaven\u00ed). Nov\u00fd design byl optimalizov\u00e1n pro integraci na str\u00e1nku nov\u00fdch funkc\u00ed (nap\u0159\u00edklad widgety a zlep\u0161en\u00ed pr\u00e1ce se z\u00e1stupci), kter\u00e9 se o\u010dek\u00e1vaj\u00ed v p\u0159\u00ed\u0161t\u00edm vyd\u00e1n\u00ed.     <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/8f59b64122a7ba1fd2a6cc17cb9d49b1.png\" style=\"display:block;margin: 0 auto\" \/>  <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/2c4de70f4f3e00e2651eca493dfe5a1b.png\" style=\"display:block;margin: 0 auto\" \/>\n<li class=\"l\"> V re\u017eimu soukrom\u00e9ho prohl\u00ed\u017een\u00ed byla implementov\u00e1na nov\u00e1 tla\u010d\u00edtko \u201eUkon\u010dit soukromou relaci\u201c (ikona s ohn\u011bm napravo od adresn\u00edho \u0159\u00e1dku), kter\u00fdm m\u016f\u017eete okam\u017eit\u011b vymazat v\u0161echna data aktu\u00e1ln\u00ed soukrom\u00e9 relace, ani\u017e byste museli zav\u0159\u00edt okno prohl\u00ed\u017ee\u010de (webov\u00e9 str\u00e1nky, kter\u00e9 byly d\u0159\u00edve otev\u0159eny v re\u017eimu soukrom\u00e9ho prohl\u00ed\u017een\u00ed, se zav\u0159ou a relace z\u016fstane pr\u00e1zdn\u00e1).      <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/839093f843517f59192891d5ea5f5499.png\" style=\"display:block;margin: 0 auto\" \/>\n<li class=\"l\"> Ve vestav\u011bn\u00e9m prohl\u00ed\u017ee\u010di PDF byla realizov\u00e1na funkce slou\u010den\u00ed n\u011bkolika str\u00e1nek do dokumentu.    <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/f01bfa53444770ab473395ddbb39dadf.png\" style=\"display:block;margin: 0 auto\" \/>\n<li class=\"l\"> Vestav\u011bn\u00e9 rozhran\u00ed pro p\u0159eklad z jednoho jazyka do druh\u00e9ho je nyn\u00ed k dispozici pro vyvol\u00e1n\u00ed prost\u0159ednictv\u00edm sekce \u201eDal\u0161\u00ed n\u00e1stroje\u201c v hlavn\u00edm menu.  <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/f4bcb85f18b4529306080cbc1e4db1eb.png\" style=\"display:block;margin: 0 auto\" \/>\n<li class=\"l\"> Hledac\u00ed \u0159\u00e1dek v konfigur\u00e1toru (about:preferences) byl roz\u0161\u00ed\u0159en a nyn\u00ed zab\u00edr\u00e1 celou dostupnou \u0161\u00ed\u0159ku.\n<li class=\"l\"> Ve verz\u00edch pro Linux byla implementov\u00e1na podpora z\u00e1lohov\u00e1n\u00ed profil\u016f, kter\u00e1 umo\u017e\u0148uje ulo\u017eit vybran\u00fd profil do souboru, kter\u00fd lze pot\u00e9 pou\u017e\u00edt k obnoven\u00ed nastaven\u00ed na jin\u00e9m syst\u00e9mu. Tato funkce byla d\u0159\u00edve k dispozici pouze ve Windows.    <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/60a33f1f99dee3abd3e92de657f4dc04.png\" style=\"display:block;margin: 0 auto\" \/>\n<li class=\"l\"> P\u0159i p\u0159enosu adres\u00e1\u0159e s profilem Firefox do jin\u00fdch \u010d\u00e1st\u00ed souborov\u00e9ho syst\u00e9mu nebo na syst\u00e9my s jin\u00fdmi opera\u010dn\u00edmi syst\u00e9my je zaji\u0161t\u011bno obnoven\u00ed nainstalovan\u00fdch dopl\u0148k\u016f a t\u00e9mat.\n<li class=\"l\"> Byla pos\u00edlena ochrana proti skryt\u00e9 identifikaci u\u017eivatele (Fingerprinting Protection), kter\u00e1 se uplat\u0148uje p\u0159i zapnut\u00ed standardn\u00ed ochrany proti sledov\u00e1n\u00ed (ETP, Enhanced Tracking Protection =&gt; Standard). Bylo zaznamen\u00e1no, \u017ee proveden\u00e9 zm\u011bny umo\u017enily v pr\u016fm\u011bru sn\u00ed\u017eit pod\u00edl u\u017eivatel\u016f identifikovan\u00fdch pomoc\u00ed standardn\u00edch metod skryt\u00e9 identifikace o 14 % (49 % pro macOS) ve srovn\u00e1n\u00ed s p\u0159edchoz\u00ed ochranou.\n<li class=\"l\"> Do integrovan\u00e9 bezplatn\u00e9 VPN slu\u017eby Firefox VPN byla p\u0159id\u00e1na mo\u017enost v\u00fdb\u011bru zem\u011b pou\u017e\u00edvan\u00e9ho <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/vpn\/\" title=\"VPN serveru\" data-wpil-keyword-link=\"linked\">VPN serveru<\/a>. Slu\u017eba umo\u017e\u0148uje p\u0159\u00edstup na webov\u00e9 str\u00e1nky nikoli p\u0159\u00edmo, ale prost\u0159ednictv\u00edm mezilehl\u00fdch proxy-<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/\" title=\"servery\" data-wpil-keyword-link=\"linked\">servery<\/a> v r\u016fzn\u00fdch zem\u00edch, kter\u00e9 skr\u00fdvaj\u00ed IP adresu u\u017eivatele. Je mo\u017en\u00e9 aktivovat VPN pouze pro vybran\u00e9 str\u00e1nky. Pro aktivaci VPN je nutn\u00e1 registrace \u00fa\u010dtu u Mozilly. V VPN slu\u017eb\u011b plat\u00ed omezen\u00ed na 50 gigabajt\u016f dat m\u011bs\u00ed\u010dn\u011b.\n<li class=\"l\"> P\u0159i \u017e\u00e1dosti webov\u00e9 aplikace o p\u0159\u00edstup k dat\u016fm o poloze na platform\u011b Windows se nyn\u00ed zohled\u0148uj\u00ed syst\u00e9mov\u00e1 nastaven\u00ed pro poskytov\u00e1n\u00ed takov\u00e9ho p\u0159\u00edstupu.\n<li class=\"l\"> Byla p\u0159id\u00e1na mo\u017enost pou\u017eit\u00ed API Web Serial pro \u0159\u00edzen\u00ed mikrokontrol\u00e9r\u016f p\u0159ipojen\u00fdch prost\u0159ednictv\u00edm s\u00e9riov\u00e9ho portu. Nap\u0159\u00edklad po potvrzen\u00ed opr\u00e1vn\u011bn\u00ed je mo\u017en\u00e9 z webov\u00e9 aplikace programovat \u010dipy ESP, desky Raspberry Pi Picos, 3D tisk\u00e1rny a za\u0159\u00edzen\u00ed s CNC. API Web Serial lze tak\u00e9 pou\u017e\u00edvat v prohl\u00ed\u017ee\u010dov\u00fdch dodatc\u00edch, ale ne z kontextu moz-extension.\n<li class=\"l\"> Pro v\u0161echny u\u017eivatele bylo zavedeno pou\u017eit\u00ed specifikace LNA (Local Network Access) pro omezen\u00ed p\u0159\u00edstupu k m\u00edstn\u00edmu syst\u00e9mu (loopback, 127.0.0.0\/8) nebo intern\u00ed s\u00edti (192.168.0.0\/16, 10.0.0.0\/8 atd.) p\u0159i interakci s ve\u0159ejn\u00fdmi str\u00e1nkami. K p\u0159\u00edstupu k intern\u00edm zdroj\u016fm mus\u00ed u\u017eivatel poskytnout webov\u00e9 aplikaci speci\u00e1ln\u00ed opr\u00e1vn\u011bn\u00ed, proto\u017ee takov\u00e1 aktivita je zneu\u017e\u00edv\u00e1na \u00fato\u010dn\u00edky k prov\u00e1d\u011bn\u00ed CSRF \u00fatok\u016f na sm\u011brova\u010de, p\u0159\u00edstupov\u00e9 body, tisk\u00e1rny, podnikov\u00e9 webov\u00e9 rozhran\u00ed a dal\u0161\u00ed za\u0159\u00edzen\u00ed a slu\u017eby, kter\u00e9 p\u0159ij\u00edmaj\u00ed \u017e\u00e1dosti pouze z m\u00edstn\u00ed s\u00edt\u011b. Krom\u011b toho m\u016f\u017ee skenov\u00e1n\u00ed intern\u00edch zdroj\u016f b\u00fdt pou\u017eito pro nep\u0159\u00edmou identifikaci nebo shroma\u017e\u010fov\u00e1n\u00ed informac\u00ed o m\u00edstn\u00ed s\u00edti. D\u0159\u00edve byla tato ochrana \u00fa\u010dinn\u00e1 pouze p\u0159i zapnut\u00ed re\u017eimu pos\u00edlen\u00e9 ochrany proti sledov\u00e1n\u00ed pohybu (ETP, Enhanced Tracking Protection =&gt; Strict).\n<li class=\"l\"> Byl implementov\u00e1n API Fullscreen Keyboard Lock, kter\u00fd do metody requestFullscreen p\u0159id\u00e1v\u00e1 argument keyboardLock, umo\u017e\u0148uj\u00edc\u00ed fullscreen webov\u00fdm aplikac\u00edm zachyt\u00e1vat zpracov\u00e1n\u00ed n\u011bkter\u00fdch kl\u00e1ves a kl\u00e1vesov\u00fdch kombinac\u00ed, nap\u0159\u00edklad lze zachytit zpracov\u00e1n\u00ed stisknut\u00ed kl\u00e1vesy Esc (v tomto p\u0159\u00edpad\u011b pro opu\u0161t\u011bn\u00ed fullscreen re\u017eimu bude t\u0159eba kl\u00e1vesu Esc podr\u017eet m\u00edsto pouh\u00e9ho stisknut\u00ed).\n<li class=\"l\"> Byla zlep\u0161ena renderov\u00e1n\u00ed prvk\u016f s absolutn\u00edm pozicov\u00e1n\u00edm uvnit\u0159 v\u00edcestloupkov\u00fdch blok\u016f nebo p\u0159i tisku.\n<li class=\"l\"> Pravidla \u201e@container\u201c nyn\u00ed povoluj\u00ed sou\u010dasn\u00e9 uveden\u00ed n\u011bkolika podm\u00ednek analogicky k medi\u00e1ln\u00edm dotaz\u016fm.\n<li class=\"l\"> V pravidlech @container je povoleno pou\u017eit\u00ed funkce style() pro kontrolu vypo\u010dten\u00fdch hodnot CSS vlastnost\u00ed kontejneru.\n<li class=\"l\"> Byla p\u0159id\u00e1na vlastnost CSSContainerRule.conditions, kter\u00e1 obsahuje seznam v\u0161ech podm\u00ednek kontejnerov\u00e9ho dotazu. Star\u00e9 vlastnosti CSSContainerRule.containerName a CSSContainerRule.containerQuery byly prohl\u00e1\u0161eny za zastaral\u00e9.\n<li class=\"l\"> Bylo zm\u011bn\u011bno chov\u00e1n\u00ed kotven\u00ed v CSS (CSS Anchor Positioning). Vlastnost position-anchor nyn\u00ed v\u00fdchoze p\u0159\u00edj\u00edm\u00e1 hodnotu \u201enormal\u201c, a p\u0159i pou\u017eit\u00ed vlastnosti position-area se implicitn\u00ed kotvy pou\u017eij\u00ed automaticky. Vyskakovac\u00ed okna (popovers), kter\u00e1 pou\u017e\u00edvaj\u00ed anchor() nebo anchor-center, nyn\u00ed vy\u017eaduj\u00ed v\u00fdslovn\u00e9 zad\u00e1n\u00ed vlastnosti \u201eposition-anchor: auto\u201c.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora API Document Picture-in-Picture pro otev\u00edr\u00e1n\u00ed libovoln\u00e9ho HTML obsahu v re\u017eimu \u201eobr\u00e1zek v obr\u00e1zku\u201c, a to nejen videa. Na rozd\u00edl od otev\u0159en\u00ed okna pomoc\u00ed vol\u00e1n\u00ed window.open() se okna vytv\u00e1\u0159en\u00e1 prost\u0159ednictv\u00edm nov\u00e9ho API v\u017edy zobrazuj\u00ed nad ostatn\u00edmi okny, nez\u016fst\u00e1vaj\u00ed po zav\u0159en\u00ed p\u016fvodn\u00edho okna, nepodporuj\u00ed navigaci a nemohou explicitn\u011b ur\u010dovat pozici v\u00fdstupu.\n<li class=\"l\"> V API Permissions byla zaji\u0161t\u011bna spr\u00e1vn\u00e1 spr\u00e1va do\u010dasn\u00fdch opr\u00e1vn\u011bn\u00ed ud\u011blen\u00fdch webu.\n<li class=\"l\"> Byla umo\u017en\u011bna deklarativn\u00ed syntaxe pro ur\u010den\u00ed, jak jsou prvky distribuov\u00e1ny do slot\u016f uvnit\u0159 Shadow DOM.\n<li class=\"l\"> Ve Firefoxu pro Android byla p\u0159id\u00e1na podpora rychl\u00e9ho p\u0159ep\u00edn\u00e1n\u00ed mezi kartami pomoc\u00ed vertik\u00e1ln\u00edho posuvn\u00e9ho gesta v oblasti panelu. Do konfigur\u00e1toru, podobn\u011b jako v desktopov\u00e9 verzi, byla p\u0159id\u00e1na mo\u017enost vypnout v\u0161echny funkce vyu\u017e\u00edvaj\u00edc\u00ed AI a byly implementov\u00e1ny nastaven\u00ed pro selektivn\u00ed zap\u00edn\u00e1n\u00ed jednotliv\u00fdch AI funkc\u00ed.    <img decoding=\"async\" alt=\"Vyd\u00e1n\u00ed Firefox 151\" src=\"\/wp-content\/uploads\/2026\/05\/68f973c7312289f16f4ea1daecca665d.png\" style=\"display:block;margin: 0 auto\" \/>                  <\/ul>\n<p>Krom\u011b novinek a oprav chyb bylo ve Firefoxu 151 odstran\u011bno 154 zranitelnost\u00ed (65 za\u0159azeno pod CVE-2026-8973, 54 pod CVE-2026-8974 a 7 pod CVE-2026-8975). 146 zranitelnost\u00ed bylo zp\u016fsobeno probl\u00e9my s pam\u011bt\u00ed, jako jsou p\u0159ete\u010den\u00ed z\u00e1sobn\u00edk\u016f a p\u0159\u00edstup k ji\u017e uvoln\u011bn\u00fdm oblastem pam\u011bti. Tyto probl\u00e9my mohou potenci\u00e1ln\u011b v\u00e9st k proveden\u00ed k\u00f3du \u00fato\u010dn\u00edka p\u0159i otev\u0159en\u00ed speci\u00e1ln\u011b navr\u017een\u00fdch str\u00e1nek.       <\/p>\n<p>V no\u010dn\u00edch sestaven\u00edch Firefoxu za\u010dalo testov\u00e1n\u00ed p\u0159ed\u011blan\u00e9ho rozhran\u00ed konfigur\u00e1toru, ve kter\u00e9m byly roz\u0161\u00ed\u0159eny prost\u0159edky pro hled\u00e1n\u00ed nastaven\u00ed, vylep\u0161ena navigace, aktualizov\u00e1ny zna\u010dky a popis nastaven\u00ed.<br \/>\n<br \/>Zdroj: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65481\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 Firefox 151 \u0438 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0432\u0435\u0442\u043e\u043a \u0441 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 &#8212; 140.11.0 \u0438 115.36.0. \u041d\u0430 \u0441\u0442\u0430\u0434\u0438\u044e \u0431\u0435\u0442\u0430-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0431\u0443\u0434\u0435\u0442 \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0435\u043d\u0430 \u0432\u0435\u0442\u043a\u0430 Firefox 152, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043d\u0430\u043c\u0435\u0447\u0435\u043d \u043d\u0430 16 \u0438\u044e\u043d\u044f. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043d\u043e\u0432\u0448\u0435\u0441\u0442\u0432\u0430 \u0432 Firefox 151 (1, 2, 3, 4): \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u0438\u0435 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b, \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u043d\u043e\u0432\u043e\u0439 \u0432\u043a\u043b\u0430\u0434\u043a\u0438 (\u043b\u043e\u0433\u043e\u0442\u0438\u043f \u043f\u0435\u0440\u0435\u043c\u0435\u0449\u0451\u043d \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":172768,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-172767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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