CVE-2019-3561
highpriority · track · 40EPSS 0.017 · 77 %ileEUUSEPSS · scored 2026-10-27
Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported versions of HHVM (4.0.3, 3.30.4, and 3.27.7 and below).
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75cnnvd
- https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.htmlcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-3561cnnvd
- https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75enisa_euvd
- https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.htmlenisa_euvd
- https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75Third Party Advisorynvd
- https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.htmlVendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan