CVE-2026-12318
7.3
HIGH
CVSS 3.1
EPSS 0.26%
Description
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
How to fix CVE-2026-12318
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/nss—no fix listed
Is CVE-2026-12318 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |