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High · CVSS 7.5CVE-2026-19913

CVE-2026-19913CVE-2026-19913

Answer in brief

CVE-2026-19913 records a High severity (CVSS 7.5) vulnerability in CVE-2026-19913. The current sources do not mark it as known exploited. The current feed maps Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Sep 3, 2026Source checked Oct 9, 2026First seen by HOL Aug 25, 2026Material review Sep 3, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic), Kaltura/Kaltura HTML5 Video Player, html5lib library (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Kaltura/Kaltura HTML5 Video Player, html5lib librarygeneric0Not reported
Kaltura/Kaltura HTML5 Video Player, html5lib librarygenericv2.45Not reported
Kaltura/Kaltura HTML5 Video Player, html5lib librarygeneric0 || 2.45Not reported
Kaltura/Kaltura HTML5 Video Player, html5lib librarygeneric>=0 <=v2.103 || 2.45Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Kaltura/Kaltura HTML5 Video Player, html5lib library, Kaltura/Kaltura HTML5 Video Player, html5lib library, Kaltura/Kaltura HTML5 Video Player, html5lib library.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 25, 2026

Sources and claim methodology

  • Source referencekb.cert.org
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • OWASP Coraza WAF: ProcessURI silently drops QUERY_STRING and ARGS_GET on URI parse failure — defense-in-depth bypass for non-net/http integrationsAlso CWE-20
  • MariaDB: `qc_info` plugin can do OOB reads if query contains \0Same generic ecosystem
  • MariaDB: mysql_json plugin OOB readsSame generic ecosystem
  • MariaDB: environment injection via wsrep bootstrap in the mariadb.service fileSame generic ecosystem
  • MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failureSame generic ecosystem
  • x64dbg-MCP Server vulnerable to pre-authentication denial of service through Content-Length integer overflowSame generic ecosystem

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-20, CWE-73
Source
CVE List V5
Source checked
Oct 9, 2026
References
1 linked source
Open source record