CVE-2026-45243Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script
Updated under an hour ago ()
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It affects steipete summarize. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
steipete summarize steipete:summarize (from the name) | before 0.15.1; 357544063af535bd574752622f9eb94be33ee5fd not affected | CNA record |
steipete summarize steipete:summarize | before 0.15.1 | NVD |
References
- https://github.com/steipete/summarize/releases/tag/v0.15.2release-notes
- https://github.com/steipete/summarize/pull/222issue-tracking, exploit, patch
- https://github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33ee5fdpatch
- https://www.vulncheck.com/advisories/summarize-browser-extension-missing-authorization-via-content-scriptthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.