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PatchSiren cyber security CVE debrief

CVE-2026-8837 ektorcaba CVE debrief

A stored cross-site scripting (XSS) vulnerability exists in the WP Iframe Geo Style for Amazon affiliates WordPress plugin. The flaw resides in the 'adid' shortcode attribute, where insufficient input sanitization and output escaping allow authenticated attackers with contributor-level access or higher to inject arbitrary web scripts. These scripts execute when any user accesses a page containing the injected content. The vulnerability affects all versions up to and including 1.1. The CVSS 3.1 score of 6.4 reflects network attack vector, low attack complexity, low privileges required, no user interaction, changed scope, and low impacts to confidentiality and integrity.

Vendor
ektorcaba
Product
WP Iframe Geo Style for Amazon affiliates
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-27
Original CVE updated
2026-05-27
Advisory published
2026-05-27
Advisory updated
2026-05-27

Who should care

WordPress site administrators using the WP Iframe Geo Style for Amazon affiliates plugin; security teams monitoring plugin vulnerabilities; Amazon affiliate marketers relying on this plugin for geo-targeted iframe embedding

Technical summary

The WP Iframe Geo Style for Amazon affiliates plugin fails to sanitize and escape the 'adid' parameter in its shortcode handler. Located in index.php, the vulnerable code accepts user-supplied input through the shortcode attribute without adequate validation, storing the payload in post content. When the post is rendered, the unsanitized output is emitted to the browser, executing attacker-controlled scripts in the security context of the viewing user's session. The attack requires authenticated access at contributor level or above, making it exploitable by users with content creation capabilities but not full administrative control.

Defensive priority

medium

Recommended defensive actions

  • Update WP Iframe Geo Style for Amazon affiliates plugin to version 1.2 or later when available
  • Audit WordPress user accounts with contributor or higher privileges for unauthorized shortcode modifications
  • Review site content for suspicious script injections in pages using the plugin's shortcode
  • Implement Content Security Policy headers to mitigate impact of potential XSS payloads
  • Consider temporarily disabling the plugin if updates are unavailable and the functionality is not critical

Evidence notes

Vulnerability identified in WordPress plugin source code at lines 42 and 110 of index.php per Wordfence security advisory. CWE-79 (Improper Neutralization of Input During Web Page Generation) classified as primary weakness.

Official resources

2026-05-27