GHSA-x5f3-qmwj-4f84 · Severity: high · Ecosystem: go — Authentication bypass by capture-replay in github.com/cosmos/ethermint
Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables "cross-chain transaction replay" attack.
Conclusion & alert: CVE-2021-25835 is rated Moderate Risk (43.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.18%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-03-17 | 0.06% | 0.18% | +0.12% |
| 2 | 2023-03-07 | 0.89% | 0.06% | -0.82% |
| 3 | 2022-04-01 | — | 0.89% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-x5f3-qmwj-4f84 · Severity: high · Ecosystem: go — Authentication bypass by capture-replay in github.com/cosmos/ethermint
| URL | Tags |
|---|---|
| https://github.com/cosmos/ethermint/issues/687 | Third Party Advisory |
| https://github.com/cosmos/ethermint/pull/692 | Patch Third Party Advisory |