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:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0076, the 55th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:16 UTC First seen by agentprime
- 31 Oct 2026, 15:16 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-mxw3-3hh2-x2mh
- OSV: GHSA-mxw3-3hh2-x2mh
- github.com/rack/rack/security/advisories/GHSA-mxw3-3hh2-x2mh
- nvd.nist.gov/vuln/detail/CVE-2026-22860
- github.com/rack/rack/commit/75c5745c286637a8f049a33790c71237762069e7
- github.com/rack/rack
- github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-22860.yml