Is CVE-2026-42635 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-42635 being exploited in the wild.

How severe is CVE-2026-42635?

High severity, with a CVSS score of 7.1, published 6 October 2026.

Which products and versions are affected?

Automatic WooCommerce Simple Auctions <= 3.0.10.

How is CVE-2026-42635 attacked?

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

Am I affected by CVE-2026-42635?

Check whether you run Automatic WooCommerce Simple Auctions 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-2026-42635: WooCommerce Simple Auctions unauthenticated cross-site scripting

Q: Is there a fix for CVE-2026-42635?

No fixed version is recorded yet. Update the plugin to a patched version when available. Until then, consider disabling the WooCommerce Simple Auctions plugin or restrict its functionality to authenticated users only via web application firewall rules. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2026-42635 attacked?

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

Q: Am I affected by CVE-2026-42635?

Check whether you run Automatic WooCommerce Simple Auctions 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-2026-42635 · Severity: high · CVSS 7.1 · Published 2026-10-06

WooCommerce Simple Auctions is a WordPress plugin that adds auction functionality to online stores. An unauthenticated attacker can inject malicious scripts into affected websites, allowing them to steal visitor data, hijack user accounts, or redirect customers to phishing pages. No official patch is yet available for versions 3.0.10 and earlier.

Vendors: Automatic.

Quick answers

Is CVE-2026-42635 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-42635 being exploited in the wild.
How severe is CVE-2026-42635?: High severity, with a CVSS score of 7.1, published 6 October 2026.
Which products and versions are affected?: Automatic WooCommerce Simple Auctions <= 3.0.10.
Is there a fix for CVE-2026-42635?: No fixed version is recorded yet. Update the plugin to a patched version when available. Until then, consider disabling the WooCommerce Simple Auctions plugin or restrict its functionality to authenticated users only via web application firewall rules. 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-2026-42635 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-42635?: Check whether you run Automatic WooCommerce Simple Auctions 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

Update the plugin to a patched version when available. Until then, consider disabling the WooCommerce Simple Auctions plugin or restrict its functionality to authenticated users only via web application firewall rules.

Technical details

The plugin fails to properly sanitize and validate user input, allowing reflected or stored XSS attacks without authentication. An attacker can craft a malicious URL or form submission that injects JavaScript code executed in victims' browsers. Successful exploitation requires a user to interact with the attacker-supplied payload (click a link, visit a page, or submit a form).

Affected products

Automatic WooCommerce Simple Auctions <= 3.0.10

Timeline

2026-10-05: disclosed
2026-10-06: advisory

References

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