---
id: CVE-2026-45245
title: >-
  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 request…
summary: >-
  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 request…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
  - CWE-940
vendor: steipete
product: summarize
affected:
  - summarize < 0.15.1
patched:
  - summarize 0.15.1
published: '2026-05-18'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:16.650'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45245'
references:
  - url: >-
      https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb
    label: disclosure@vulncheck.com
  - url: 'https://github.com/steipete/summarize/pull/218'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/steipete/summarize/releases/tag/v0.15.2'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events
    label: disclosure@vulncheck.com
  - url: 'https://github.com/steipete/summarize/pull/218'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-05-18T20:30:27.411418Z'
epss: 0.0045
epssPercentile: 0.37036
ingestedAt: '2026-10-08T16:52:14.681Z'
---

## Overview

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

- `summarize < 0.15.1`

## Remediation

Upgrade past the affected range:

- `summarize 0.15.1`