{"id":1439,"date":"2026-10-21T07:40:00","date_gmt":"2026-10-21T07:40:00","guid":{"rendered":"https:\/\/cloudabove.com\/help\/auto-draft-2\/"},"modified":"2026-10-22T11:43:47","modified_gmt":"2026-10-22T11:43:47","slug":"important-php-security-advisory-october-2026","status":"publish","type":"post","link":"https:\/\/cloudabove.com\/help\/important-php-security-advisory-october-2026\/","title":{"rendered":"Important PHP Security Advisory (October 2026)"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"what-website-owners-need-to-know\">What Website Owners Need to Know<\/h1>\n\n\n\n<p><strong>Last updated: 22 October 2026<\/strong><br><br>Please keep an eye on our status page for regular updates.<\/p>\n\n\n\n<p>On 21 October 2026, the PHP development team released emergency security updates addressing two critical vulnerabilities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CVE-2026-109618<\/strong><\/li>\n\n\n\n<li><strong>CVE-2026-109619<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Both vulnerabilities were rated 9.2 out of 10 in severity and could potentially allow attackers to execute malicious code on affected systems.<\/p>\n\n\n\n<p>These are industry-wide vulnerabilities affecting PHP itself, rather than an issue specific to our hosting services.<\/p>\n\n\n\n<p>Our Systems and Development teams have been working extensively to apply the necessary security updates across our hosting infrastructure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"do-i-need-to-do-anything\">Do I need to do anything?<\/h2>\n\n\n\n<p><strong>If you&#8217;re using our shared or reseller hosting services, no action is required from you to address these particular PHP vulnerabilities.<\/strong><\/p>\n\n\n\n<p>We&#8217;ve applied the relevant security updates at server level, including fixes for older PHP versions provided through CloudLinux.<\/p>\n\n\n\n<p><strong>You do not need to change your PHP version specifically because of this security announcement.<\/strong><\/p>\n\n\n\n<p>For other hosting services, the situation depends on the platform and PHP version you&#8217;re using. We&#8217;ve explained the differences below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-have-we-done\">What have we done?<\/h2>\n\n\n\n<p>Our teams worked throughout the evening of 21 October and overnight to apply security patches and additional protections across our hosting platforms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"shared-hosting-reseller-hosting-and-managed-cpanel-plesk-servers\">Shared hosting, reseller hosting and managed cPanel\/Plesk servers<\/h3>\n\n\n\n<p>The relevant PHP security updates have been applied across our cPanel, Plesk and DirectAdmin infrastructure.<\/p>\n\n\n\n<p>CloudLinux has also provided backported security fixes for older PHP versions, covering PHP <strong>5.2 through to 8.5<\/strong> through its PHP Selector.<\/p>\n\n\n\n<p>This means customers running older PHP versions, such as PHP 5.6, 7.2 or 7.4, are covered against these particular vulnerabilities when using the patched CloudLinux packages.<\/p>\n\n\n\n<p><strong>No PHP version change is required to address these vulnerabilities on our patched shared hosting services.<\/strong><\/p>\n\n\n\n<p>Although we generally recommend using newer, supported PHP versions for long-term security and compatibility, there is no need to rush into changing an existing, working website because of this announcement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"scout-jcp-and-ultra-cloud\">Scout, JCP and ULTRA Cloud<\/h3>\n\n\n\n<p>Security updates have been applied to PHP versions <strong>7.4 through to 8.5<\/strong> across our updated Scout, JCP and ULTRA Cloud platform.<\/p>\n\n\n\n<p>Customers running these patched versions do not need to change their PHP version specifically because of these vulnerabilities.<\/p>\n\n\n\n<p>Some older PHP versions and legacy server environments have not received the latest patches.<\/p>\n\n\n\n<p>For JCP customers, we&#8217;ve introduced a new PHP column to help identify which PHP versions your websites are using.<\/p>\n\n\n\n<p><strong>Any PHP versions highlighted in red have not received the necessary security patches and require attention.<\/strong><\/p>\n\n\n\n<p>We recommend reviewing these websites and planning an upgrade to a patched PHP version.<\/p>\n\n\n\n<p>Temporary security measures have been applied where possible, and we&#8217;re contacting affected customers directly where further action is required.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"windows-servers\">Windows servers<\/h3>\n\n\n\n<p>For Windows servers maintained by our team, PHP versions <strong>8.2 through to 8.5<\/strong> have received the relevant updates.<\/p>\n\n\n\n<p>Older versions may currently be covered by temporary mitigations only, and we&#8217;re contacting affected customers where appropriate.<\/p>\n\n\n\n<p>If you operate an unmanaged Windows server or another customer-managed server, you&#8217;ll need to check and apply the appropriate PHP security updates yourself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-does-my-website-still-show-an-older-php-version-number\">Why does my website still show an older PHP version number?<\/h2>\n\n\n\n<p>Some customers have noticed that WordPress, <code>phpinfo()<\/code> or their hosting control panel still reports a PHP version older than the official fixed release.<\/p>\n\n\n\n<p>For example, a website might report PHP 8.2.34 rather than PHP 8.2.35.<\/p>\n\n\n\n<p><strong>This does not necessarily mean the website is vulnerable.<\/strong><\/p>\n\n\n\n<p>CloudLinux uses a process called <em>backporting<\/em>, which allows security fixes to be applied to existing PHP packages without changing the version number displayed by your website.<\/p>\n\n\n\n<p>This means an older version number can still contain the relevant security fixes.<\/p>\n\n\n\n<p>Our teams can verify the installed packages if there are concerns about a particular server or PHP installation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"should-i-upgrade-my-php-version\">Should I upgrade my PHP version?<\/h2>\n\n\n\n<p>We always recommend using a currently supported PHP version wherever possible.<\/p>\n\n\n\n<p>Older versions such as PHP 5.6, 7.2 and 7.4 are no longer supported directly by the PHP development team.<\/p>\n\n\n\n<p>Although CloudLinux provides additional security maintenance for older versions, moving to a newer PHP release remains worthwhile for long-term security, performance and compatibility.<\/p>\n\n\n\n<p>However, <strong>there is no need to make an urgent PHP version change on our patched shared hosting services specifically because of these two vulnerabilities.<\/strong><\/p>\n\n\n\n<p>Changing PHP versions can sometimes cause problems with older websites, plugins or applications.<\/p>\n\n\n\n<p>If you&#8217;re planning an upgrade, we&#8217;d recommend:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Taking a full backup of your website and database.<\/li>\n\n\n\n<li>Checking that your website software supports the newer PHP version.<\/li>\n\n\n\n<li>Updating WordPress, plugins and themes where applicable.<\/li>\n\n\n\n<li>Testing the website thoroughly after making changes.<\/li>\n<\/ol>\n\n\n\n<p>Where possible, major PHP upgrades should be tested on a staging website before applying them to the live site.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-can-i-check-which-php-version-my-website-is-using\">How can I check which PHP version my website is using?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"cpanel\">cPanel<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Log in to cPanel.<\/li>\n\n\n\n<li>Search for <strong>Select PHP Version<\/strong>.<\/li>\n\n\n\n<li>Open the PHP Selector to view your current PHP version.<\/li>\n<\/ol>\n\n\n\n<p>If you manage multiple websites through WHM, you can navigate to <strong>List Accounts<\/strong>, access each account&#8217;s cPanel and check its PHP version.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"wordpress\">WordPress<\/h3>\n\n\n\n<p>You can normally check your PHP version under:<\/p>\n\n\n\n<p><strong>WordPress Dashboard &gt; Tools &gt; Site Health &gt; Info &gt; Server<\/strong><\/p>\n\n\n\n<p>Please remember that the version displayed may not reflect security fixes backported by your hosting provider.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-other-security-precautions-have-been-taken\">What other security precautions have been taken?<\/h2>\n\n\n\n<p>In addition to applying PHP updates, we&#8217;ve introduced additional protections where appropriate.<\/p>\n\n\n\n<p>These include updated Imunify360 firewall rules and temporary PHP configuration changes to help reduce exposure to the vulnerabilities.<\/p>\n\n\n\n<p>Some older environments that cannot receive the latest security patches remain protected by temporary, best-effort mitigations.<\/p>\n\n\n\n<p>These additional measures are not a guaranteed replacement for installing the appropriate PHP security updates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-else-should-i-do-to-keep-my-website-secure\">What else should I do to keep my website secure?<\/h2>\n\n\n\n<p>Although we&#8217;ve addressed these particular PHP vulnerabilities across our patched hosting environments, this doesn&#8217;t guarantee that an individual website is free from other security issues.<\/p>\n\n\n\n<p>We recommend that website owners continue to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Keep WordPress, plugins, themes and other website software updated.<\/li>\n\n\n\n<li>Remove unused or abandoned plugins and themes.<\/li>\n\n\n\n<li>Use strong passwords and enable two-factor authentication where available.<\/li>\n\n\n\n<li>Maintain recent, working backups.<\/li>\n\n\n\n<li>Review older PHP versions and plan upgrades when appropriate.<\/li>\n\n\n\n<li>Investigate unexpected website changes or suspicious behaviour.<\/li>\n<\/ul>\n\n\n\n<p>For customers using unmanaged website services, maintaining the website&#8217;s application software remains the customer&#8217;s responsibility.<\/p>\n\n\n\n<p>Please note that updating WordPress or its plugins alone does not fix a vulnerability within PHP itself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-if-i-manage-my-own-server\">What if I manage my own server?<\/h2>\n\n\n\n<p>Customers managing their own servers or PHP installations should not assume that security updates have been applied automatically.<\/p>\n\n\n\n<p>Please check your installed PHP packages and ensure they contain the relevant fixes for CVE-2026-109618 and CVE-2026-109619.<\/p>\n\n\n\n<p>Where appropriate updates are not yet available, we recommend discussing upgrade options and temporary security measures with your server administrator.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"further-information\">Further information<\/h2>\n\n\n\n<p>For further technical information, please see:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/archive\/2026.php\" target=\"_blank\" rel=\"noreferrer noopener\">PHP: Official Security Announcements<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cloudlinux.statuspage.io\/incidents\/zl0vt1yq3dj5\" target=\"_blank\" rel=\"noreferrer noopener\">CloudLinux: PHP Security Update Status<\/a><\/li>\n<\/ul>\n\n\n\n<p>We&#8217;ll continue monitoring developments and updating this article where necessary.<\/p>\n\n\n\n<p>If you have concerns about a particular website or hosting service, please contact our Support team.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Website Owners Need to Know Last updated: 22 October 2026Please keep an eye on our status page for regular updates. On 21 October 2026, the PHP development team released emergency security updates addressing two critical vulnerabilities: CVE-2026-109618 CVE-2026-109619 Both vulnerabilities were rated 9.2 out of 10 in severity and&hellip;<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-1439","post","type-post","status-publish","format-standard","hentry","category-security"],"_links":{"self":[{"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/posts\/1439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/comments?post=1439"}],"version-history":[{"count":11,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/posts\/1439\/revisions"}],"predecessor-version":[{"id":1450,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/posts\/1439\/revisions\/1450"}],"wp:attachment":[{"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/media?parent=1439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/categories?post=1439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cloudabove.com\/help\/wp-json\/wp\/v2\/tags?post=1439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}