CVE-2026-66317
published 2026-08-04CVE-2026-66317: Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
PriorityP428medium5.4CVSS 3.1
AVNACLPRNUIRSUCLILAN
EPSS
0.21%
10.9th percentile
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | edge_chromium | < 151.0.4129.59 | 151.0.4129.59 |
| microsoft | microsoft_edge | >= 1.0.0.0 < 151.0.4129.59 | 151.0.4129.59 |
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VulDB
Microsoft Edge up to 150.0.4078.99 improper authorization
vuldb·2026-08-04·CVSS 5.4
CVE-2026-66317 [MEDIUM] Microsoft Edge up to 150.0.4078.99 improper authorization
A vulnerability identified as critical has been detected in Microsoft Edge. This affects an unknown function. This manipulation causes improper authorization.
This vulnerability appears as CVE-2026-66317. The attack may be initiated remotely. There is no available exploit.
You should upgrade the affected component.
GHSA
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
ghsa_unreviewed·2026-08-04
CVE-2026-66317 [MEDIUM] CWE-346 Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering over a network.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-04
Published