Vulnerability details
CVE-2026-16407
Mitigation bypass in the DOM: Service Workers component
CVSS 3.1
9.8Critical
Official description
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| No product information recorded. | |||
References and advisories
3
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Details
- Published
- 2026-07-21
- Last updated
- 2026-07-22
- State
- Published
- Assigner (CNA)
- mozilla
Exploit prediction (EPSS)
0.51%
Probability of exploitation in 30 days
44%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-693Protection Mechanism Failure
- CWE-284Improper Access Control