CVE-2026-45243

Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script

Published May 18, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-5624-2pmv-jx46 Summarize contains a missing authorization vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:steipete:summarize:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Steipete
Steipete summarize
Vendors & Products Steipete
Steipete summarize
Type Values Removed Values Added
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.
Title Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:03 PM
Reserved
May 11, 2026, 2:14 PM
Status
Analyzed
Published
May 18, 2026, 7:16 PM
Modified
Oct 14, 2026, 8:10 PM