CVE-2026-18481 - Stored XSS in Participant URL Field leads to Account Takeover via Session Token Theft

The collected bulletin did not provide a separate affected-products list. Check the original bulletin before making an exposure decision.

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Sep 9, 2026 at 9:30 PM UTC
   • The vendor changed the advisory's last-updated date.
2. Aug 20, 2026 at 9:50 PM UTC
   • The vendor changed the advisory title.
   • The vendor changed the advisory ID.
   • Added CVEs: CVE-2026-18481.
   • Removed CVEs: CVE-2026-18420.
   • Added affected products: CVE-2026-18481 - Stored XSS in Participant URL Field leads to Account Takeover via Session Token Theft.
   • Removed affected products: CVE-2026-18420 - Remote Code Execution via Prototype Pollution in OpenSearch Dashboards TSVB Plugin.

1. Aug 20, 2026 at 2:20 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

2. Sep 9, 2026 at 9:15 PM UTC
   Published by AWS

   The publication date reported by the vendor.

3. Sep 9, 2026 at 9:30 PM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.