CVE-2026-100751

What it is

Joomla Extension - regularlabs.com - Privileged stored XSS via data-rlta-url attributes in Tabs & Accordions (Pro) 2.3.0 - 3.1.0 - Tabs & Accordions Pro accepts a url option for an item and writes it to a generated data-rlta-url attribute. The browser code passes that value to window.open() when the item is activated. Affected versions do not reject browser URL schemes which execute JavaScript. Joomla sees ordinary plugin syntax while filtering the authored article; Tabs & Accordions creates the executable browser behavior later while rendering the article.

At a glance

Exploitability

Can be exploited over the network with an admin-level account. High risk of data exposure, data tampering.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-09-28 07:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-27 14:29 UTC Last updatedMost recent change to the record

Details

Published

2026-09-28 07:17 UTC

Last modified

2026-10-27 14:29 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Analyzed

Affected

• Regularlabs Tabs \& Accordions ≤ 3.1.0

Attack profile CVSS 4.0 · 7.5

Attack vector

Network

Complexity

Low

Attack requirements

Present

Privileges needed

High

User interaction

None

Confidentiality

High

Integrity

High

Availability

Low