CVE-2026-19913

A flaw was found in the Kaltura HTML5 player mwEmbed / html5lib. An unauthenticated, remote attacker can exploit improper validation of the ServiceUrl parameter in mwEmbedLoader.php. This parameter, used for backend requests, accepts non-HTTP schemes such as file://. When an exception or error...

CVE-2026-19913

The Kaltura HTML5 player mwEmbed / html5lib contains a local file disclosure vulnerability due to improper validation of the ServiceUrl parameter in mwEmbedLoader.php. This parameter is used as the base URL for a backend request and accepts non‑HTTP schemes such as file://. When an exception or...

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...

EUVD-2026-65615

The Kaltura HTML5 player mwEmbed / html5lib contains a local file disclosure vulnerability due to improper validation of the ServiceUrl parameter in mwEmbedLoader.php. This parameter is used as the base URL for a backend request and accepts non‑HTTP schemes such as file://. When an exception or...

EUVD-2026-65614

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

CVE-2026-19912 is an unauthenticated remote code execution vulnerability in the Kaltura HTML5 Player V2 library (mwEmbed / html5lib). The root cause is an unsafe PHP unserialize() call in KalturaClientBase.php combined with unsanitized use of the uiconf_id parameter in cache path construction, al...

PT-2026-81395

Name of the Vulnerable Software and Affected Versions Kaltura HTML5 player mwEmbed / html5lib versions 2.x and earlier Description A local file disclosure issue exists due to improper validation of the ServiceUrl parameter in the 'mwEmbedLoader.php' endpoint. This parameter, intended as the base...

Remote Code Execution and Arbitrary File Read Vulnerabilities in Kaltura Servers

Overview The Kaltura HTML5 Player V2 Library mwEmbed / html5lib contains two vulnerabilities, both involving the same insecure deserialization flaw, that enable arbitrary file read and remote code execution. Affected versions include html5lib v2.45, v2.103 and earlier, and other v2.x releases tha...

PT-2026-81394

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...