Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.6 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber | CNA (seal) |
- CISA KEV Not listed.
- EPSS 0.0051, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-w5vr-8v7q-w6rv
- OSV: GHSA-w5vr-8v7q-w6rv
- nvd.nist.gov/vuln/detail/CVE-2026-45819
- github.com/web-platform-dx/baseline-browser-mapping/pull/137
- github.com/web-platform-dx/baseline-browser-mapping/pull/137/changes#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519
- github.com/web-platform-dx/baseline-browser-mapping/commit/de733e2d8959559f7bb255d5927f3afcb6f31589
- github.com/web-platform-dx/baseline-browser-mapping
- github.com/web-platform-dx/baseline-browser-mapping/blob/b7881aa61c8a057e24468ab5ee18c5ecedbbf691/src/index.ts#L142
- github.com/web-platform-dx/baseline-browser-mapping/releases/tag/v2.11.0
- www.npmjs.com/package/baseline-browser-mapping