Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Steipete | Summarize | < 0.15.1 |
Related Weaknesses (CWE)
References
- https://github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33Patch
- https://github.com/steipete/summarize/pull/222ExploitIssue TrackingPatch
- https://github.com/steipete/summarize/releases/tag/v0.15.2Release Notes
- https://www.vulncheck.com/advisories/summarize-browser-extension-missing-authoriThird Party Advisory
FAQ
What is CVE-2026-45243?
CVE-2026-45243 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ar...
How severe is CVE-2026-45243?
CVE-2026-45243 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45243?
Check the references section above for vendor advisories and patch information. Affected products include: Steipete Summarize.