VDB
CVE-2026-6760
CVE-2026-6760
PUBLISHED
CVSS 9.8 CRITICAL
Mitigation bypass in the Networking: Cookies component
Reported by mozilla · Published April 21, 2026
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| firefox | Chainguard | 150-r0 |
| firefox | Wolfi | 150-r0 |
| thunderbird | mozilla | 150.0 |
| firefox | mozilla | 150.0 |
Risk scores
CVSS 3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | 150 |
| Mozilla | Thunderbird | 150 |
| Mozilla | Firefox | 150 |
| chainguard | firefox | 0 |
| Mozilla | Thunderbird | 150 |
| wolfi | firefox | 0 |
Timeline
- Apr 21, 2026 CVE Published
- Apr 22, 2026 EPSS Score (30 in total, the first dated here)
- Apr 22, 2026 Security Advisory (33 in total, the first dated here)
- Jul 14, 2026 Coalition ESS Score
- Aug 11, 2026 Distribution Patch (28 in total, the first dated here)
- Oct 26, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-6760
vulnetix vdb fixes CVE-2026-6760Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-6760/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart