What’s Vulnerable › Vulnerabilities

CVE-2016-1000004

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-19 · updated 2026-06-17
• Weakness: CWE-345

Description

Insufficient type checks were employed prior to casting input data in SimpleXMLElement_exportNode and simplexml_import_dom. This issue affects HHVM versions prior to 3.9.5, all versions between 3.10.0 and 3.12.3 (inclusive), and all versions between 3.13.0 and 3.14.1 (inclusive).

Affected products

• Facebook HHVM: before 3.9.5; from 3.10.0 through 3.12.3; from 3.13.0 through 3.14.1 — fixed in 3.9.5

How to fix

Upgrade to a fixed version: Facebook HHVM 3.9.5. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/hhvm/commit/8e7266fef1f329b805b37f32c9ad0090215ab269
• https://www.facebook.com/security/advisories/cve-2016-1000004
• https://github.com/facebook/hhvm/commit/8e7266fef1f329b805b37f32c9ad0090215ab269
• https://www.facebook.com/security/advisories/cve-2016-1000004

Get alerted when CVE-2016-1000004 or the next vulnerability affects your stack