CVE-2026-66318
HIGHCVSS 8.1/10EPSS 0.37%
Last modified
CVE-2026-66318 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Edge Chromium | < 151.0.4129.59 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-66318?
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
How severe is CVE-2026-66318?
CVE-2026-66318 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2026-66318?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
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Are you affected by CVE-2026-66318?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST