PT-2026-41720 · Npm+1 · @Steipete/Summarize+1

Published 2026-05-18 · Updated 2026-05-20 · CVE-2026-45243

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Summarize versions prior to 0.15.1

Description A missing authorization issue exists in the content script window.postMessage bridge. This allows malicious pages to simulate runtime messages using spoofed sender identifiers, enabling unauthorized operations on automation artifacts scoped to the affected tab. These operations include listing, reading, creating, overwriting, or deleting artifacts.

Recommendations Update to version 0.15.1.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-45243

GHSA-5624-2PMV-JX46

Affected Products

@Steipete/Summarize

Summarize

References · 11

• https://github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33ee5fd · Patch
• https://github.com/steipete/summarize/pull/222 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-45243 · Security Note
• https://osv.dev/vulnerability/GHSA-5624-2pmv-jx46 · Vendor Advisory
• https://github.com/steipete/summarize/releases/tag/v0.15.1 · Note
• https://github.com/steipete/summarize · Note
• https://github.com/steipete/summarize/releases/tag/v0.15.2 · Note
• https://twitter.com/infoflowcloud/status/2056994964114993231 · Twitter Post
• https://twitter.com/CVEnew/status/2056994237540159697 · Twitter Post
• https://t.me/CVEtracker/54158 · Telegram Post
• https://vulncheck.com/advisories/summarize-browser-extension-missing-authorization-via-content-script · Note