PatchTheCVECVE-2026-59788: The email media type OAuth form passes the Authorization endpoint value to window.open() without validating th
CVE-2026-59788 is a medium-severity flaw (CVSS 5.7) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an import file, runs arbitrary JavaScript as the Super Admin who grants consent.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.7 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Active |
| EPSS exploit chance | 0.3% (top 84%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-10-05 |
| Last modified | 2026-10-06 |
Last updated 2026-10-06 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
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-2026-59788?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-59788 being exploited?
CVE-2026-59788 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-2026-59788 affect?
CVE-2026-59788 affects affected software. Severity is medium (CVSS 5.7). The email media type OAuth form passes the Authorization endpoint value to window.open() without validating the URL scheme, so a javascript: URL is executed in the browser. This means a crafted media type configuration, deliverable as an im
How urgent is CVE-2026-59788?
Priority 24/100. No elevated risk signals yet.