What’s Vulnerable › Vulnerabilities

CVE-2022-36937

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-10 · updated 2026-06-17
• Weakness: CWE-327

Description

HHVM 4.172.0 and all prior versions use TLS 1.0 for secure connections when handling tls:// URLs in the stream extension. TLS1.0 has numerous published vulnerabilities and is deprecated. HHVM 4.153.4, 4.168.2, 4.169.2, 4.170.2, 4.171.1, 4.172.1, 4.173.0 replaces TLS1.0 with TLS1.3. Applications that call stream_socket_server or stream_socket_client functions with a URL starting with tls:// are affected.

Affected products

• Facebook HHVM: before 4.153.4; from 4.154.0 before 4.168.2; from 4.169.0 before 4.169.2; from 4.170.0 before 4.170.2; 4.171.0, 4.172.0 — fixed in 4.153.4, 4.168.2, 4.169.2, 4.170.2

How to fix

Upgrade to a fixed version: Facebook HHVM 4.153.4, 4.168.2, 4.169.2, 4.170.2. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/hhvm/commit/083f5ffdee661f61512909d16f9a5b98cff3cf0b
• https://hhvm.com/blog/2023/01/20/security-update.html
• https://github.com/facebook/hhvm/commit/083f5ffdee661f61512909d16f9a5b98cff3cf0b
• https://hhvm.com/blog/2023/01/20/security-update.html

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