Summarize's hover summary feature allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @steipete/summarize | < 0.15.1 | 0.15.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-45245
- https://github.com/steipete/summarize/pull/218
- https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb
- https://github.com/steipete/summarize
- https://github.com/steipete/summarize/releases/tag/v0.15.1
- https://github.com/steipete/summarize/releases/tag/v0.15.2
- https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N- Weakness (CWE)
CWE-918- Platform
- npm
- Package
@steipete/summarize- Disclosed
- 18.05.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-2r69-qgv3-hr65 - CC BY 4.0
Vulnerability history: @steipete/summarize
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 05.2026 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 4
- Low 1
Disclosures per year
- 2026: 6
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Summarize's hover summary feature allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links this entry
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