CVE-2019-11936

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Various APC functions accept keys containing null bytes as input, leading to premature truncation of input. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-626

Affected software

Vendor	Product	Versions
Facebook	HHVM	4.28.2; >= 4.28.0, < unspecified; 4.27.1; >= 4.27.0, < unspecified; 4.26.1; >= 4.26.0, < unspecified; 4.25.1; >= 4.25.0, < unspecified; 4.24.1; >= 4.24.0, < unspecified; 4.23.2; >= 4.9.0, < unspecified; 4.8.6; >= 4.0.0, < unspecified; 3.30.12; >= unspecified, < 3.30.12

References

https://github.com/facebook/hhvm/commit/f57df6d8cf33cb14c40f52287da29360e7003373Patch, Third Party Advisory
https://hhvm.com/blog/2019/10/28/security-update.htmlVendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11936Vendor Advisory
https://github.com/facebook/hhvm/commit/f57df6d8cf33cb14c40f52287da29360e7003373Patch, Third Party Advisory
https://hhvm.com/blog/2019/10/28/security-update.htmlVendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11936Vendor Advisory

Timeline

Published: Dec 4, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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