CVE-2026-48942Network attack vector

Stored XSS via unescaped image attributes

Published Jun 25, 2026 · Updated Jun 25, 2026

Stored XSS in JoomlaWorks K2 1.0 through 2.26 allows remote attackers to execute script in users' browsers through a crafted image value. Two templates read the #__k2_users.image database column and insert its value directly into HTML src attributes without context-appropriate escaping. Exploitation requires a user to view an affected template; the script then runs in the site's origin and can read or alter data exposed to that session.

CVSS severity6.1
Medium
EPSS probability0.25%
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 attackers to execute script in users' browsers through a crafted image value. Two templates read the #__k2_users.image database column and insert its value directly into HTML src attributes without context-appropriate escaping. Exploitation requires a user to view an affected template; the script then runs in the site's origin and can read or alter data exposed to that session.

The record

CVE
CVE-2026-48942
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
JoomlaWorks
Product
K2
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

JoomlaWorks · K2version=1.0-2.26

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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