CVE-2019-15120

MEDIUM

Kunena < 5.1.14 - Cross-Site Scripting via BBCode

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-15120. PoCs published by h3llraiser.

AI-analyzed exploit summary The repository provides a functional proof-of-concept for CVE-2019-15120, demonstrating a stored XSS vulnerability in the Kunena extension for Joomla! via maliciously crafted BBCode. The exploit leverages the `[spoiler]` tag to inject arbitrary JavaScript, which can lead to RCE under certain conditions.

Description

The Kunena extension before 5.1.14 for Joomla! allows XSS via BBCode.

Exploits (1)

nomisec WORKING POC 1 stars
by h3llraiser · poc
https://github.com/h3llraiser/CVE-2019-15120

The repository provides a functional proof-of-concept for CVE-2019-15120, demonstrating a stored XSS vulnerability in the Kunena extension for Joomla! via maliciously crafted BBCode. The exploit leverages the `[spoiler]` tag to inject arbitrary JavaScript, which can lead to RCE under certain conditions.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Kunena extension for Joomla! versions 5.x through 5.1.14
Auth required
Prerequisites: Access to a Joomla! instance with Kunena extension < 5.1.14 · Ability to post messages with BBCode
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/h3llraiser/CVE-2019-15120

Scores

CVSS v3 5.4
EPSS 0.0135
EPSS Percentile 68.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
kunena/kunena < 5.1.14
Published Aug 16, 2019
Tracked Since Feb 18, 2026