CVE-2026-48940Network attack vector

Stored script execution via unescaped embedVideo rendering

Published Jun 25, 2026 · Updated Jun 25, 2026

Stored XSS in JoomlaWorks K2 1.0 through 2.26 allows remote authenticated users to run script in article visitors' browsers. K2 stores a raw script tag from the embedVideo POST field and renders the stored value without escaping on the article page. Exploitation requires K2 create-item rights, assigned to Authors by default, and a visitor must open the crafted article for the script to execute.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in JoomlaWorks K2 1.0 through 2.26 allows remote authenticated users to run script in article visitors' browsers. K2 stores a raw script tag from the embedVideo POST field and renders the stored value without escaping on the article page. Exploitation requires K2 create-item rights, assigned to Authors by default, and a visitor must open the crafted article for the script to execute.

The record

CVE
CVE-2026-48940
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
JoomlaWorks
Product
K2
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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=1.0-2.26

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JoomlaWorks · K2version=1.0-2.26

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007JavaScript/JScript

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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