Is CVE-2026-102398 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-102398 being exploited in the wild.

How severe is CVE-2026-102398?

High severity, with a CVSS score of 7.1, published 30 September 2026.

Is there a fix for CVE-2026-102398?

A patch was published on 2026-09-30: patched in version 1.13.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-102398 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-102398?

Check whether you run Supsystic Popup at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-102398: Supsystic Popup unauthenticated cross-site scripting

CVE-2026-102398 · Severity: high · CVSS 7.1 · Published 2026-09-30

Popup by Supsystic is a WordPress plugin used to create and display pop-up messages and forms on websites. An unauthenticated attacker can inject malicious scripts that execute in visitors' browsers, potentially stealing sensitive data, hijacking accounts, or defacing pages without requiring any special access to the site.

Vendors: Supsystic.

Quick answers

Is CVE-2026-102398 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-102398 being exploited in the wild.
How severe is CVE-2026-102398?: High severity, with a CVSS score of 7.1, published 30 September 2026.
Which products and versions are affected?: Supsystic Popup <= 1.13.1.
Is there a fix for CVE-2026-102398?: A patch was published on 2026-09-30: patched in version 1.13.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102398 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-102398?: Check whether you run Supsystic Popup at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An unauthenticated cross-site scripting vulnerability in Popup by Supsystic versions up to 1.13.1 allows attackers to inject arbitrary JavaScript that executes in the context of the affected website. The vulnerability requires user interaction—a visitor must click a malicious link or visit a crafted page to trigger the payload. The plugin has been patched in version 1.13.2.

Affected products

Supsystic Popup <= 1.13.1

Timeline

2026-09-30: disclosed
2026-09-30: patched: patched in version 1.13.2

References

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