CVE-2026-19912
23Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendepss 0.2%
from disclosure to weapon1 days
Published on NVDAug 25
1st PoC+1d
exploitation probability
0.2%top 87% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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 resulting object’s fields are written to a cache path derived from attacker‑supplied uiconf_id without proper path validation. An attacker can write arbitrary files into web‑accessible locations and achieve code execution as the webserver user. Affected versions include html5lib v2.45, v2.103 and earlier, and other v2.x releases exposing the vulnerable endpoint.
Affected products
Kaltura · Kaltura HTML5 Video Player, html5 librarypublic PoCs found — 1
githubgithub.com/HORKimhab/CVE-2026-19912-CVE-2026-19913-CVE-2026-19914★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://kb.cert.org/vuls/id/308749