CVE-2019-11926

Name: CVE-2019-11926
Creator: NVD / NIST
Published: 2019-09-06T19:15:11.607+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.29%

Last modified Jun 17, 2026

CVE-2019-11926 is a vulnerability of currently unknown severity. Insufficient boundary checks when processing M_SOFx markers from JPEG headers in the GD extension could allow access to out-of-bounds memory via a maliciously constructed invalid JPEG input. This issue affects HHVM versions prior to 3.30.9, all versions between 4.0.0 and 4.8.3, all versions between 4.9.0 and 4.15.2, and versions 4.16.0 to 4.16.3, 4.17.0 to 4.17.2, 4.18.0 to 4.18.1, 4.19.0, 4.20.0 to 4.20.1.. EPSS estimates a 2.29% chance of exploitation in the next 30 days.

Description

Insufficient boundary checks when processing M_SOFx markers from JPEG headers in the GD extension could allow access to out-of-bounds memory via a maliciously constructed invalid JPEG input. This issue affects HHVM versions prior to 3.30.9, all versions between 4.0.0 and 4.8.3, all versions between 4.9.0 and 4.15.2, and versions 4.16.0 to 4.16.3, 4.17.0 to 4.17.2, 4.18.0 to 4.18.1, 4.19.0, 4.20.0 to 4.20.1.

Metrics

EPSS Probability

2.29%

81.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Facebook	Hhvm	<= 3.30.9
Facebook	Hhvm	>= 4.0.0, <= 4.8.3
Facebook	Hhvm	>= 4.9.0, <= 4.15.2
Facebook	Hhvm	>= 4.16.0, <= 4.16.3
Facebook	Hhvm	>= 4.17.0, <= 4.17.2
Facebook	Hhvm	>= 4.18.0, <= 4.18.1
Facebook	Hhvm	>= 4.20.0, <= 4.20.1
Facebook	Hhvm	4.19.0

References

https://github.com/facebook/hhvm/commit/f9680d21beaa9eb39d166e8810e29fbafa51ad15Patch, Third Party Advisory
https://hhvm.com/blog/2019/09/03/security-update.htmlThird Party Advisory
https://www.facebook.com/security/advisories/cve-2019-11926Vendor Advisory
https://github.com/facebook/hhvm/commit/f9680d21beaa9eb39d166e8810e29fbafa51ad15Patch, Third Party Advisory
https://hhvm.com/blog/2019/09/03/security-update.htmlThird Party Advisory
https://www.facebook.com/security/advisories/cve-2019-11926Vendor Advisory

Timeline

Published: Sep 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11926?

How severe is CVE-2019-11926?

Severity scoring for CVE-2019-11926 is pending analysis. The EPSS model estimates a 2.29% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11926?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11926?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST