CVE-2026-88853Network attack vector

Stored XSS via untrusted modal event handlers

Published Sep 14, 2026 · Updated Sep 14, 2026

Stored cross-site scripting in Regular Labs Modals Pro 4.7.0 through 16.2.0 allows remote authenticated users to run JavaScript. Ordinary article content can supply executable JavaScript Events such as on-open and on-closed because affected releases do not distinguish it from trusted extension configuration. Author-level content access is sufficient, and the code executes in browsers that render the stored modal content.

CVSS severityUnavailable
Unscored
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 cross-site scripting in Regular Labs Modals Pro 4.7.0 through 16.2.0 allows remote authenticated users to run JavaScript. Ordinary article content can supply executable JavaScript Events such as on-open and on-closed because affected releases do not distinguish it from trusted extension configuration. Author-level content access is sufficient, and the code executes in browsers that render the stored modal content.

The record

CVE
CVE-2026-88853
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Regular Labs
Product
Modals Pro
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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=4.7.0-16.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Regular Labs · Modals Proversion=4.7.0-16.2.0

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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