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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.017, the 77th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
- GitHub Advisory Database: GHSA-339q-62wm-c39w
- OSV: GHSA-339q-62wm-c39w
- nvd.nist.gov/vuln/detail/CVE-2021-3859
- github.com/undertow-io/undertow/pull/1296
- github.com/undertow-io/undertow/commit/db0f5be43f8e2a4b88fbedd2eb6d5a95a29ceaa8
- github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2
- access.redhat.com/security/cve/cve-2021-3859
- bugzilla.redhat.com/show_bug.cgi?id=2010378
- github.com/undertow-io/undertow
- issues.redhat.com/browse/UNDERTOW-1979
- security.netapp.com/advisory/ntap-20221201-0004