CVE-2026-45243
CVE-2026-45243 · Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Summarize prior to 0.15.1 contains a missing authorization vulnerability in the content script window.postMessage bridge that allows malicious pages to perform unauthorized operations on automation artifacts. Attackers can simulate runtime messages with spoofed sender identifiers to list, read, create, overwrite, or delete automation artifacts scoped to the affected tab without proper authorization checks.
CVSS 5.3 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
summarize
- Versions
- ≥ 0, < 0.15.1: Affected (semver)
- 357544063af535bd574752622f9eb94be33ee5fd: Not affected (git)
Update to 0.15.1
@steipete/summarize npm
- Affected ranges
- SEMVER: < 0.15.0
Update to 0.15.0
Original sources
- https://github.com/steipete/summarize/releases/tag/v0.15.2
- https://github.com/steipete/summarize/pull/222
- https://github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33ee5fd
- https://www.vulncheck.com/advisories/summarize-browser-extension-missing-authorization-via-content-script
- https://nvd.nist.gov/vuln/detail/CVE-2026-45243