Medium severity6.1NVD Advisory· Published May 18, 2026· Updated May 19, 2026
CVE-2026-45243
CVE-2026-45243
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@steipete/summarizenpm | < 0.15.0 | 0.15.0 |
Affected products
3Patches
Vulnerability mechanics
References
7- github.com/steipete/summarize/commit/357544063af535bd574752622f9eb94be33ee5fdnvdPatchWEB
- github.com/steipete/summarize/pull/222nvdExploitIssue TrackingPatchWEB
- github.com/advisories/GHSA-5624-2pmv-jx46ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-45243ghsaADVISORY
- www.vulncheck.com/advisories/summarize-browser-extension-missing-authorization-via-content-scriptnvdThird Party AdvisoryWEB
- github.com/steipete/summarize/releases/tag/v0.15.1ghsaWEB
- github.com/steipete/summarize/releases/tag/v0.15.2nvdRelease NotesWEB
News mentions
0No linked articles in our index yet.