CVE-2026-6287: ShopLentor WordPress plugin stored XSS in Product Grid blocks

CVE-2026-6287 · Severity: medium · CVSS 5.4 · Published 2026-05-27

ShopLentor is a popular WordPress plugin used to build and customize WooCommerce online stores. A security flaw in this plugin allows users with low-level account access, such as contributors, to embed malicious scripts into store pages. When other users or administrators visit these pages, the scripts can execute, potentially leading to unauthorized actions or the theft of sensitive session information.

Technologies: HasThemes ShopLentor. Vendors: HasThemes.

Quick answers

Is CVE-2026-6287 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-6287 being exploited in the wild.
How severe is CVE-2026-6287?
Medium severity, with a CVSS score of 5.4, published 27 May 2026.
Which products and versions are affected?
HasThemes ShopLentor Up to and including 3.3.8.
Is there a fix for CVE-2026-6287?
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-2026-6287 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-6287?
Check whether you run HasThemes ShopLentor 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 ShopLentor plugin for WordPress (versions up to 3.3.8) is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'blockUniqId' attribute within various Product Grid blocks. An authenticated attacker with contributor-level permissions or higher can inject arbitrary web scripts into a page. These scripts execute in the context of a user's browser whenever they visit the affected page. The vulnerability is tracked as CWE-79 and was addressed in a subsequent changeset.

Affected products

  • HasThemes ShopLentor – WooCommerce Builder for Elementor & Gutenberg Up to and including 3.3.8

Timeline

  • 2026-05-27: disclosed
  • 2026-05-27: advisory

References

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