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 |
|---|---|---|---|---|
| 2.8 | Low | 3.1 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N | CNA (mitre) |
- CISA KEV Not listed.
- EPSS 0.0019, the 8th 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-mqcp-p2hv-vw6x
- OSV: GHSA-mqcp-p2hv-vw6x
- nvd.nist.gov/vuln/detail/CVE-2025-54314
- github.com/github/advisory-database/pull/5912#issuecomment-3169255309
- github.com/rails/thor/pull/897
- github.com/rails/thor/commit/536b79036a0efb765c1899233412e7b1ca94abfa
- hackerone.com/reports/3260153
- github.com/rails/thor
- github.com/rails/thor/releases/tag/v1.4.0
- github.com/rubysec/ruby-advisory-db/blob/master/gems/thor/CVE-2025-54314.yml