Insufficient boundary checks for the strrpos and strripos functions allow access to out-of-bounds memory. This affects all supported…

Description

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).

Scores

EPSS (exploitation in 30 days)

1.7% · top 23% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) (opens in a new tab)All about CWE-119 and its CVEs
• CWE-125 (opens in a new tab)All about CWE-125 and its CVEs

Affected products

• Facebook · HHVM

  • affected 4.0.4
  • affected 4.0.0 – < unspecified
  • affected 3.30.5
  • affected 3.30.0 – < unspecified
  • affected 3.27.8
  • affected unspecified – < 3.27.8

References (2)

• https://github.com/facebook/hhvm/commit/46003b4ab564b2abcd8470035fc324fe36aa8c75 (opens in a new tab)x_refsource_MISCx_transferred
• https://hhvm.com/blog/2019/04/03/hhvm-4.0.4.html (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2019-3561](https://trackcve.app/badge/CVE-2019-3561.svg)](https://trackcve.app/cve/CVE-2019-3561)

Record last updated 4 Aug 2024, 19:12 UTC.