Back
CVE-2019-11930
An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. This issue affects…
Critical9.8EPSS 3.2%
- Published
- Updated
- Reserved
- Assigned by
Description
An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.2% · top 12% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected 4.28.2
- affected 4.28.0 – < unspecified
- affected 4.27.1
- affected 4.27.0 – < unspecified
- affected 4.26.1
- affected 4.26.0 – < unspecified
- affected 4.25.1
- affected 4.25.0 – < unspecified
- affected 4.24.1
- affected 4.24.0 – < unspecified
- affected 4.23.2
- affected 4.9.0 – < unspecified
- affected 4.8.6
- affected 4.0.0 – < unspecified
- affected 3.30.12
- affected unspecified – < 3.30.12
References (3)
- https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://hhvm.com/blog/2019/10/28/security-update.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.facebook.com/security/advisories/cve-2019-11930 (opens in a new tab)x_refsource_CONFIRMx_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
[](https://trackcve.app/cve/CVE-2019-11930)Record last updated .