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🐍 PyPI
Not in CISA KEV

GHSA-22wc-c9wj-6q2v

Fix: vyperlang/vyper#2345

GHSA-22wc-c9wj-6q2v is a remote code execution vulnerability in vyper. O3 Security confirms whether GHSA-22wc-c9wj-6q2v is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

VVE-2021-0001: Memory corruption using function calls within arrays

Published
Apr 19, 2021
Updated
Dec 2, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Dec 2, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐍vyper

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

Impact

When performing a function call inside an array, there is a memory corruption issue that occurs because of an incorrect pointer to the the tip of the stack.

Patches

This issue was partially fixed in VVE-2020-0004, however the fix did not update similar code for arrays, which had a similar issue. The issue is fully fixed in https://github.com/vyperlang/vyper/pull/2345

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIvyperall versions0.2.12

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for vyper. 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. Fix

    Update vyper to 0.2.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-22wc-c9wj-6q2v 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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-22wc-c9wj-6q2v 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-22wc-c9wj-6q2v. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact When performing a function call inside an array, there is a memory corruption issue that occurs because of an incorrect pointer to the the tip of the stack. ### Patches This issue was partially fixed in [VVE-2020-0004](https://github.com/vyperlang/vyper/security/advisories/GHSA-2r3x-4mrv-mcxf), however the fix did not update similar code for arrays, which had a similar issue. The issue is fully fixed in https://github.com/vyperlang/vyper/pull/2345
O3 Security · Impact-Aware SCA

Is GHSA-22wc-c9wj-6q2v in your dependencies?

O3 detects GHSA-22wc-c9wj-6q2v across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-22wc-c9wj-6q2v: vyper | O3 Security