CVE-2026-100803
EUVD-2026-8895629.09.2026, 13:17
Same-origin policy bypass in the WebExtensions component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mozilla | firefox | 𝑥 < 157 | CNA |
| mozilla | firefox_esr | 𝑥 < 115.42 | CNA |
| mozilla | firefox_esr | 116.0.0 ≤ 𝑥 < 140.17 | CNA |
| mozilla | firefox_esr | 141.0.0 ≤ 𝑥 < 153.4 | CNA |
Debian Releases