Vulnerability · NVD
CVE-2026-8950
CVE-2026-8950, rated high by the vendor: 2 tracked apps concerned, all fixed or indeterminable on their current version.
- Severity (CVSS)
- 9.3
- Exploitation
- 0.2 %
- Tracked apps
- 2
- Still exposed
- 0
Base CVSS ; severity is a vendor rating (different scale)
EPSS, predicted over 30 days
Vendor bulletin scale : NVD CVSS pending
Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Attack vector : Network
No privileges required
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS
0.21%
exploit very unlikely
percentile 9.9%
Tracked apps referencing this CVE
For each app: the affected range, the fixing version, and where the tracked app stands today.
Vulnerable CPE configurations (4)
| Vendor | Product | Platform | Versions | CPE 2.3 URI |
|---|---|---|---|---|
| mozilla |
firefox All platforms (wildcard)
|
All platforms (wildcard) | <140.11.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* |
| mozilla |
firefox All platforms (wildcard)
|
All platforms (wildcard) | <151.0.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* |
| mozilla |
thunderbird All platforms (wildcard)
|
All platforms (wildcard) | <140.11 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* |
| mozilla |
thunderbird All platforms (wildcard)
|
All platforms (wildcard) | <151.0.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* |
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