CVE-2026-45245: Summarize's hover summary feature allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links
(updated )
Summarize prior to 0.15.0 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.
References
- github.com/advisories/GHSA-2r69-qgv3-hr65
- github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb
- github.com/steipete/summarize/pull/218
- github.com/steipete/summarize/releases/tag/v0.15.1
- github.com/steipete/summarize/releases/tag/v0.15.2
- nvd.nist.gov/vuln/detail/CVE-2026-45245
- www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events
Code Behaviors & Features
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