Read the docs
TI-2026-16144 Aliases CVE-2026-19913GHSA-7hc5-vghm-cr8h

Improper input validation in Kaltura HTML5 Video Player, html5lib library

Priority MEDIUM 40CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-73 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00583 48th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
KalturaKaltura HTML5 Video Player, html5lib libraryup to v2.103; 2.45—No fix listedCNA
  • Kaltura HTML5 Video Player, html5lib library VendorKaltura Affected up to v2.103; 2.45 Fixed in — No fix listed CNA

Remediation

Red Hat 1 advisory

  • RHSA-2026:69539 Released 2026-09-21 · Red Hat rating Important
    RHOAI 3.5.1 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.5 registry.redhat.io/rhoai/odh-cli-rhel9, registry.redhat.io/rhoai/odh-mlserver-cuda-rhel9, registry.redhat.io/rhoai/odh-mlserver-rhel9 +28

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift AI 3.5Fixed RHSA-2026:69539
Not affected: 1 product
  • Red Hat OpenShift AI 3.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-19913
  2. 2026-10-03 Alias added: GHSA-7hc5-vghm-cr8h

References

Other 1

  • TI-2017-10304 The getUserzoneCookie function in Kaltura before 13.2.0 uses a hardcoded cookie secret to… CVSS 3.0CRITICAL 9.8
  • TI-2016-09164 Kaltura < 11.1.0-2 PHP Object Injection RCE CVSS 4.0CRITICAL 9.3
  • TI-2026-16143 Improper input validation in Kaltura HTML5 Video Player, html5 library CVSS 3.1CRITICAL 9.8
  • TI-2017-10302 The wiki_decode Developer System Helper function in the admin panel in Kaltura before… CVSS 3.1HIGH 7.2
  • TI-2017-10303 Multiple cross-site scripting (XSS) vulnerabilities in Kaltura before 13.2.0 allow remote… CVSS 3.0MEDIUM 6.1
  • TI-2017-04199 An issue was discovered in Kaltura server Lynx-12.11.0. CVSS 3.0MEDIUM 6.1
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences