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HIGH severity

Denial of Service in BytomGHSA-vc3x-gx6c-g99f

HIGHFix: Bytom/bytom#1307

GHSA-vc3x-gx6c-g99f is a high-severity (CVSS 7.5) CWE-190 vulnerability in github.com/bytom/bytom. A fix is available for github.com/bytom/bytom — see the affected versions and patch details below.

Also known asCVE-2018-18206GO-2021-0079
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs73th percentile — riskier than 73% of all scored CVEsHighest risk
0.00%0.65%1.30%1.95%0.5%1.4%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-vc3x-gx6c-g99f by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐹github.com/bytom/bytom

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

In the client in Bytom before 1.0.6, checkTopicRegister in p2p/discover/net.go does not prevent negative idx values, leading to a crash.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/bytom/bytomall versions1.0.6go get github.com/bytom/bytom@v1.0.6

Affected Products

1 product · 1 configurations
Application
bytombytom
< 1.0.6
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/bytom/bytom, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/bytom/bytom to 1.0.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vc3x-gx6c-g99f is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

In the client in Bytom before 1.0.6, checkTopicRegister in p2p/discover/net.go does not prevent negative idx values, leading to a crash.
O3 Security · Impact-Aware SCA

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Denial of Service in Bytom (High 7.5)