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CRITICAL severity

GHSA-hc92-9h3m-c39j

CRITICAL

GHSA-hc92-9h3m-c39j is a critical-severity (CVSS 9.8) CWE-681 vulnerability in anymap. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether GHSA-hc92-9h3m-c39j is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Incorrect cast in anymap

Also known asCVE-2021-38187RUSTSEC-2021-0065
Published
Aug 25, 2021
Updated
Feb 4, 2026
Affected
1 pkg
Patched
None yet
Exploits
1 known
Exploitation data as of Feb 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🦀anymap

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

Description

An issue was discovered in the anymap crate through 0.12.1 for Rust. It violates soundness via conversion of a *u8 to a *u64.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🦀crates.ioanymapall versionsNo fix
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for anymap. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Remediation status

    No patched version of anymap has shipped for GHSA-hc92-9h3m-c39j yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-hc92-9h3m-c39j is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-hc92-9h3m-c39j. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An issue was discovered in the anymap crate through 0.12.1 for Rust. It violates soundness via conversion of a *u8 to a *u64.
O3 Security · Impact-Aware SCA

Is GHSA-hc92-9h3m-c39j in your dependencies?

O3 detects GHSA-hc92-9h3m-c39j across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-hc92-9h3m-c39j: Incorrect cast in… | O3 Security