9.8
Critical
CVE-2026-84133 Site isolation issue in the DOM: Push Subscriptions component
Description
Site isolation issue in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 155 | earliest → < 155 | 155 |
| Firefox 153.2 | earliest → < 153.2 | 153.2 |
| Thunderbird 155 | earliest → < 155 | 155 |
| Thunderbird 153.2 | earliest → < 153.2 | 153.2 |
References
- bugzilla.mozilla.org bugzilla.mozilla.org
- www.mozilla.org www.mozilla.org
- www.mozilla.org www.mozilla.org
- www.mozilla.org www.mozilla.org
- www.mozilla.org www.mozilla.org
Timeline
- Published
- Last modified
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