CVE-2026-19913Network attack vector

Unauthenticated file disclosure via unchecked ServiceUrl scheme

Published Aug 25, 2026 · Updated Aug 26, 2026

Local file disclosure in Kaltura HTML5 Video Player 2.103 and earlier allows remote attackers to read server files via ServiceUrl. mwEmbedLoader.php accepts file URLs for backend requests, passes the returned bytes to PHP deserialization, and reflects raw input when parsing fails. Network access to the legacy Player V2 endpoint is sufficient, and disclosure is limited to files readable by the web-server user.

CVSS severity7.5
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file disclosure in Kaltura HTML5 Video Player 2.103 and earlier allows remote attackers to read server files via ServiceUrl. mwEmbedLoader.php accepts file URLs for backend requests, passes the returned bytes to PHP deserialization, and reflects raw input when parsing fails. Network access to the legacy Player V2 endpoint is sufficient, and disclosure is limited to files readable by the web-server user.

The record

CVE
CVE-2026-19913
Published
Aug 25, 2026
Updated
Aug 26, 2026
Vendor
Kaltura
Product
Kaltura HTML5 Video Player
Classifications
CWE-20, CWE-73, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=v2.103
  2. Affected versionversion=2.45

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kaltura · Kaltura HTML5 Video Playerversion=0 <=v2.103; version=2.45

Published CVSS scores

7.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-73External Control of File Name or Path
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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