What’s Vulnerable › Vulnerabilities

CVE-2019-11926

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-06 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• Facebook HHVM: through 3.30.9; from 4.0.0 through 4.8.3; from 4.9.0 through 4.15.2; from 4.16.0 through 4.16.3; from 4.17.0 through 4.17.2; from 4.18.0 through 4.18.1

References

• https://github.com/facebook/hhvm/commit/f9680d21beaa9eb39d166e8810e29fbafa51ad15
• https://hhvm.com/blog/2019/09/03/security-update.html
• https://www.facebook.com/security/advisories/cve-2019-11926
• https://github.com/facebook/hhvm/commit/f9680d21beaa9eb39d166e8810e29fbafa51ad15
• https://hhvm.com/blog/2019/09/03/security-update.html
• https://www.facebook.com/security/advisories/cve-2019-11926

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