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  5. CVE-2026-45245

CVE-2026-45245: Summarize's hover summary feature allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links

May 18, 2026 (updated May 29, 2026)

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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Affected versions

All versions before 0.15.1

Fixed versions

  • 0.15.1

Solution

Upgrade to version 0.15.1 or above.

Impact 7.4 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-918: Server-Side Request Forgery (SSRF)

Source file

npm/@steipete/summarize/CVE-2026-45245.yml

Spotted a mistake? Edit the file on GitLab.

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