RegularLabs Modals Pro Extension up to 16.2.0 Event Handler Option cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.26+

Summaryinfo

A vulnerability described as problematic has been identified in RegularLabs Modals Pro Extension up to 16.2.0. This affects an unknown function of the component Event Handler Option. The manipulation results in cross site scripting. This vulnerability is reported as CVE-2026-88853. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in RegularLabs Modals Pro Extension up to 16.2.0. It has been classified as problematic. Affected is an unknown code block of the component Event Handler Option. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Joomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed. Affected versions do not distinguish trusted extension configuration from event code supplied in ordinary article content. A lower-privileged author can therefore use a documented executable feature which should be reserved for trusted authors.

The advisory is available at regularlabs.com. This vulnerability is traded as CVE-2026-88853 since 09/10/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/10/2026 CVE reserved
09/14/2026 +4 days Advisory disclosed
09/14/2026 +0 days VulDB entry created
09/14/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: regularlabs.com
Status: Not defined

CVE: CVE-2026-88853 (🔒)
GCVE (CVE): GCVE-0-2026-88853
GCVE (VulDB): GCVE-100-403422

Entryinfo

Created: 09/14/2026 08:33
Changes: 09/14/2026 08:33 (66)
Complete: 🔍
Cache ID: 216::103

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