Is CVE-2026-102562 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-102562 being exploited in the wild.

How severe is CVE-2026-102562?

High severity, with a CVSS score of 7.2, published 13 October 2026.

Which products and versions are affected?

AcyMailing up to and including 11.1.0.

Is there a fix for CVE-2026-102562?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-102562 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-102562?

Check whether you run AcyMailing 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-2026-102562: AcyMailing stored cross-site scripting in subscriber fields

CVE-2026-102562 · Severity: high · CVSS 7.2 · Published 2026-10-13

AcyMailing is a WordPress plugin for email marketing that stores subscriber information. An unauthenticated attacker can inject malicious scripts into subscriber custom fields, which are then executed when administrators or other users view the subscriber's online archive. This could allow attackers to steal administrator credentials or perform unauthorized actions.

Technologies: AcyMailing. Vendors: Acymailing.

Quick answers

Is CVE-2026-102562 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-102562 being exploited in the wild.
How severe is CVE-2026-102562?: High severity, with a CVSS score of 7.2, published 13 October 2026.
Which products and versions are affected?: AcyMailing up to and including 11.1.0.
Is there a fix for CVE-2026-102562?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-102562 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-102562?: Check whether you run AcyMailing 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

The plugin fails to properly sanitize and escape the customField[] parameter in the public frontusers::subscribe endpoint. The acym_cleanVar() sanitizer's HTML-tag stripper only matches complete tags, allowing attackers to bypass it with incomplete tags. The stored payload is later substituted into mail bodies and archive view templates without HTML encoding, resulting in stored XSS that executes in the browsers of users accessing the poisoned subscriber archive.

Affected products

Acymailing AcyMailing up to and including 11.1.0

Timeline

2026-10-13: disclosed

References

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