Is CVE-2026-125454 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-125454 being exploited in the wild.

How severe is CVE-2026-125454?

Medium severity, with a CVSS score of 6.5, published 11 November 2026.

Which products and versions are affected?

WP Chill Passster through 4.3.21.

Is there a fix for CVE-2026-125454?

Yes: fixed in 4.3.22. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-125454 attacked?

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

Am I affected by CVE-2026-125454?

Check whether you run WP Chill Passster 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-2026-125454: WP Chill Passster content-protector stored cross-site scripting

CVE-2026-125454 · Severity: medium · CVSS 6.5 · Published 2026-11-11

Passster is a WordPress plugin that protects content on websites. The plugin contains a stored cross-site scripting vulnerability that allows attackers with contributor or developer privileges to inject malicious scripts into pages, which are then executed when other users visit the site. An attacker could use this to steal visitor data, hijack accounts, or deface the site.

Technologies: WP Chill Passster. Vendors: WP Chill.

Quick answers

Is CVE-2026-125454 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-125454 being exploited in the wild.
How severe is CVE-2026-125454?: Medium severity, with a CVSS score of 6.5, published 11 November 2026.
Which products and versions are affected?: WP Chill Passster through 4.3.21.
Is there a fix for CVE-2026-125454?: Yes: fixed in 4.3.22. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-125454 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-125454?: Check whether you run WP Chill Passster 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.

How to fix

Fixed in: 4.3.22

Technical details

The vulnerability is an improper neutralization of input during web page generation (CWE-79), resulting in stored XSS. Exploitation requires authentication as a user with contributor or developer role who can interact with the vulnerable component. An authenticated attacker can inject malicious scripts that persist on the site and execute in the browsers of all visitors who view the affected content.

Affected products

WP Chill Passster through 4.3.21

Timeline

2026-11-11: disclosed
2026-11-11: advisory

References

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