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 error occurs, the response is subsequently deserialized and its raw contents are reflected to the client in an error message; this enables an unauthenticated, remote attacker to read any arbitrary internal file reachable by the server. Affected versions include html5lib v2.45, v2.103 and earlier, and other v2.x releases exposing the vulnerable endpoint.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://kb.cert.org/vuls/id/308749 |
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History
Tue, 25 Aug 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-20 CWE-200 |
Tue, 25 Aug 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 error occurs, the response is subsequently deserialized and its raw contents are reflected to the client in an error message; this enables an unauthenticated, remote attacker to read any arbitrary internal file reachable by the server. Affected versions include html5lib v2.45, v2.103 and earlier, and other v2.x releases exposing the vulnerable endpoint. | |
| Title | CVE-2026-19913 | |
| References |
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Status: PUBLISHED
Assigner: certcc
Published:
Updated: 2026-08-25T16:36:42.889Z
Reserved: 2026-08-14T20:08:01.555Z
Link: CVE-2026-19913
No data.
Status : Received
Published: 2026-08-25T17:17:09.163
Modified: 2026-08-25T17:17:09.163
Link: CVE-2026-19913
No data.
OpenCVE Enrichment
Updated: 2026-08-25T18:15:04Z