Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | affected |
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| Mozilla | Thunderbird | affected |
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| Vendor | Product | Confidence | Versions | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mozilla | Firefox | 100% |
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No vendor fix or workaround currently provided.
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Tracking
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Tue, 27 Oct 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, and Thunderbird 159. | Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6. |
| First Time appeared |
Mozilla
Mozilla firefox |
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| Vendors & Products |
Mozilla
Mozilla firefox |
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| References |
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Tue, 27 Oct 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6. | Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, and Thunderbird 159. |
| References |
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Tue, 27 Oct 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-200 |
Tue, 27 Oct 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6. | |
| Title | Site isolation issue in the Networking: HTTP component | |
| References |
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MITRE
Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-10-27T18:29:50.014Z
Reserved: 2026-10-27T14:05:42.348Z
Link: CVE-2026-117966
Vulnrichment
No data.
NVD
Status : Deferred
Published: 2026-10-27T14:16:54.527
Modified: 2026-10-27T15:00:49.240
Link: CVE-2026-117966
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-10-27T18:30:07Z
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CWE-200
Exposure of Sensitive Information to an Unauthorized Actor