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Vulnerabilities CVE-2026-45243

CVE-2026-45243

Medium
Open
TLP:CLEAR

Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script

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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.

Details

CVSS Score
5.3
EPSS Score
0.19%

9.4th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Confidence
90%
Published
May 18, 2026
Last Modified
Jul 14, 2026
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