CVE-2026-19912

The Kaltura HTML5 player mwEmbed / html5lib contains an unauthenticated remote code execution vulnerability caused by unsafe data deserialization and unsanitized filesystem path construction. mwEmbedLoader.php accepts a user‑controlled ServiceUrl, whose response is passed to unserialize, and the...

CVE-2026-19912

The Kaltura HTML5 player (mwEmbed / html5lib) is vulnerable to unauthenticated remote code execution (RCE) in versions html5lib v2.45, v2.103, and earlier , as well as other v2.x releases. The root cause is unsafe data deserialization via the mwEmbedLoader.php endpoint, which processes a user-con...