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 |
|---|---|---|---|---|
| 9.8 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.011, the 64th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:26 UTC First seen by agentprime
- 31 Oct 2026, 15:26 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-xx36-6rv4-gj8r
- OSV: GHSA-xx36-6rv4-gj8r
- nvd.nist.gov/vuln/detail/CVE-2021-43568
- github.com/starkbank/ecdsa-elixir/commit/4b960e26768bb698f449eb7686b5664936b70b61
- github.com/starkbank/ecdsa-elixir/commit/a5168f6d9cfbe0a0a62d92e2e9b1a97235d90343
- github.com/starkbank/ecdsa-elixir
- github.com/starkbank/ecdsa-elixir/releases/tag/v1.0.1
- research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries