CVE-2026-45243CWE-862broken-access-control

CVE-2026-45243

Medium · published May 18, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
24.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00329 · 24.8th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-18T23:16Z
Affected products (1)
ProductVersionsFixed in
steipete/summarize< 0.15.10.15.1
References (4)
https://github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33ee5fd · [email protected]https://github.com/steipete/summarize/pull/222 · [email protected]https://github.com/steipete/summarize/releases/tag/v0.15.2 · [email protected]https://www.vulncheck.com/advisories/summarize-browser-extension-missing-authorization-via-content-script · [email protected]
EPSS history
Timeline
  • 18 MAY 18:50Z
    Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script
    cvelistv5