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🐍 PyPI

GHSA-hh39-vjv8-j337

CRITICAL

pywasm3 contains a global buffer overflow which leads to segmentation fault

Also known asCVE-2024-34252PYSEC-2024-309
Published
May 6, 2024
Updated
Jun 9, 2026
Affected
1 pkg
Patched
None yet
Exploits
None indexed

Blast Radius

1 pkg affected
🐍pywasm3

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

Description

wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the function "PreserveRegisterIfOccupied" in wasm3/source/m3_compile.c.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐍PyPIpywasm3all versionsNo fix

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pywasm3. 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 pywasm3 has shipped for GHSA-hh39-vjv8-j337 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-hh39-vjv8-j337 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-hh39-vjv8-j337. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the function "PreserveRegisterIfOccupied" in wasm3/source/m3_compile.c.
O3 Security · Impact-Aware SCA

Is GHSA-hh39-vjv8-j337 in your dependencies?

O3 detects GHSA-hh39-vjv8-j337 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.