PatchTheCVECVE-2026-45243: Summarize prior to 0.15.1 contains a missing authorization vulnerability in the content script window.postMess
CVE-2026-45243 is a medium-severity flaw (CVSS 6.1) affecting summarize. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 91%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2026-05-18 |
| Last modified | 2026-10-14 |
Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-45243?
summarize: upgrade to 0.15.1. Exact commands for each OS are on this page.
Is CVE-2026-45243 being exploited?
CVE-2026-45243 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-45243 affect?
CVE-2026-45243 affects summarize. Severity is medium (CVSS 6.1). 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
How urgent is CVE-2026-45243?
Priority 29/100. Public exploit reference
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