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Advisory record · GHSA-f854-hpxv-cw9r

Drainage of FeeCollector's Block Transaction Fees in cronos

CVSS 7.5 HighEPSS 0.014 · 71st percentile

Published by the GitHub Advisory Database at 6 Jan 2022, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/crypto-org-chain/cronosGo<0.6.50.6.5
github.com/tharsis/ethermintGo>=0.8.0, <0.10.0 || <0.7.30.10.0, 0.7.3
github.com/tharsis/evmosGo<=0.4.2No fixed version yet
Identifiers
GHSA-f854-hpxv-cw9r · CVE-2021-43839
Weakness (CWE)
CWE-670
Tags
Published
6 Jan 2022
Updated
8 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Cronos versions before 0.6.5 are vulnerable, as are Ethermint versions before 0.7.3 and from 0.8.0 up to (not including) 0.10.0, and Evmos up to and including 0.4.2, which has no fixed version listed. An attacker who can submit a specially crafted Ethereum transaction message to a node can take transaction fees collected for the current block from the Cosmos SDK fee collector, while user funds and balances are not affected. Upgrade Cronos to 0.6.5 or Ethermint to 0.7.3 or 0.10.0; the source lists no workaround and recommends upgrading.

Written 6 Nov 2026.

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

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.014, the 71st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:05 UTC First seen by agentprime
  2. 31 Oct 2026, 15:05 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.