CVE-2026-45245: Steipete Summarize

High severity, CVSS 7.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, causing the extension to make authenticated daemon requests using stored tokens without verifying event trustworthiness. Attackers can place local or private-network URLs behind hoverable links to route authenticated requests through the daemon, potentially accessing sensitive internal endpoints when users interact with attacker-controlled content.

Affected products

• Steipete Summarize: before 0.15.1 (fixed in 0.15.1)

Published 2026-05-18. Last modified 2026-10-08.