CVE-2026-100830
published 2026-09-29CVE-2026-100830: Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
PriorityP341high8.1CVSS 3.1
AVNACLPRNUIRSUCHIHAN
EPSS
0.14%
2.6th percentile
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox | < 153.4.0 | 153.4.0 |
| mozilla | firefox | >= 154.0.0 < 157.0.0 | 157.0.0 |
| mozilla | firefox_esr | < Firefox ESR 153.4 | Firefox ESR 153.4 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | < Thunderbird 153.4 | Thunderbird 153.4 |
| mozilla | thunderbird | < 153.4.0 | 153.4.0 |
| mozilla | thunderbird | >= 154.0 < 157.0 | 157.0 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
vendor_redhat8.1HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
firefox: Mitigation bypass in the DOM: Navigation component
vendor_redhat·2026-09-29·CVSS 8.1
CVE-2026-100830 [HIGH] CWE-346 firefox: Mitigation bypass in the DOM: Navigation component
firefox: Mitigation bypass in the DOM: Navigation component
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Mitigation bypass in the DOM: Navigation component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Package: firefox (Red Hat Enterprise Linux 10) - No
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100830
vendor_mozilla
CVE-2026-100830 Mozilla Foundation Security Advisory 2026-97: CVE-2026-100830
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100830
Product: Firefox
Impact: low
Fixed in: Firefox 157
Mozilla
Mozilla Foundation Security Advisory 2026-100: CVE-2026-100830
vendor_mozilla
CVE-2026-100830 Mozilla Foundation Security Advisory 2026-100: CVE-2026-100830
Mozilla Foundation Security Advisory 2026-100
CVE: CVE-2026-100830
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100830
vendor_mozilla
CVE-2026-100830 Mozilla Foundation Security Advisory 2026-101: CVE-2026-100830
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100830
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
Mozilla
Mozilla Foundation Security Advisory 2026-103: CVE-2026-100830
vendor_mozilla
CVE-2026-100830 Mozilla Foundation Security Advisory 2026-103: CVE-2026-100830
Mozilla Foundation Security Advisory 2026-103
CVE: CVE-2026-100830
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.4
GHSA
Mitigation bypass in the DOM: Navigation component.
ghsa_unreviewed·2026-09-29
CVE-2026-100830 Mitigation bypass in the DOM: Navigation component.
Mitigation bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
No detection rules found.
No public exploits indexed.
2026-09-29
Published