CVE-2026-5341 — Cross-Site Scripting (XSS)

title: WordPress NMR Strava Plugin Stored XSS via strava_nmr_connect shortcode — CVE-2026-5341
id: scw-2026-05-08-ai-1
status: experimental
level: medium
description: |
  This rule detects attempts to exploit CVE-2026-5341 in the NMR Strava activities plugin for WordPress. It specifically looks for requests containing the 'strava_nmr_connect' shortcode within the plugin's directory and evidence of script tags in the query parameters, indicating a potential Stored Cross-Site Scripting (XSS) attack. This vulnerability allows authenticated attackers with contributor-level access to inject malicious scripts into pages.
author: SCW Feed Engine (AI-generated)
date: 2026-05-08
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-5341/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/wp-content/plugins/nmr-strava-activities/'
      cs-uri-query|contains:
          - 'strava_nmr_connect'
      cs-uri-query|contains:
          - '<script>'
      cs-uri-query|contains:
          - '</script>'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse