Out-of-bounds read in Meta HHVM
Priority MEDIUM 45CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. 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.
Why it matters now
EPSS 0.01476 74th percentileScored 2026-11-07
Fix Fixed HHVM (Facebook): 3.30.12
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Meta | HHVM | 4.28.2; 4.28.0 and later; 4.27.1; 4.27.0 and later; 4.26.1; 4.26.0 and later; 4.25.1; 4.25.0 and later; 4.24.1; 4.24.0 and later; 4.23.2; 4.9.0 and later; 4.8.6; 4.0.0 and later; 3.30.12; before 3.30.12 | 3.30.12 | Patch available | CNA |
- HHVM VendorMeta Affected 4.28.2; 4.28.0 and later; 4.27.1; 4.27.0 and later; 4.26.1; 4.26.0 and later; 4.25.1; 4.25.0 and later; 4.24.1; 4.24.0 and later; 4.23.2; 4.9.0 and later; 4.8.6; 4.0.0 and later; 3.30.12; before 3.30.12 Fixed in 3.30.12 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | before 3.30.12; 4.0.0 – 4.8.5; 4.9.0 – 4.23.1 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.24.0:*:*:*:*:*:*:* | 4.24.0 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.25.0:*:*:*:*:*:*:* | 4.25.0 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.26.0:*:*:*:*:*:*:* | 4.26.0 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.27.0:*:*:*:*:*:*:* | 4.27.0 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.28.0:*:*:*:*:*:*:* | 4.28.0 | Vulnerable | Meta |
| cpe:2.3:a:facebook:hhvm:4.28.1:*:*:*:*:*:*:* | 4.28.1 | Vulnerable | Meta |
- cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* Versions before 3.30.12; 4.0.0 – 4.8.5; 4.9.0 – 4.23.1 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.24.0:*:*:*:*:*:*:* Versions 4.24.0 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.25.0:*:*:*:*:*:*:* Versions 4.25.0 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.26.0:*:*:*:*:*:*:* Versions 4.26.0 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.27.0:*:*:*:*:*:*:* Versions 4.27.0 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.28.0:*:*:*:*:*:*:* Versions 4.28.0 Vulnerable ·Meta
- cpe:2.3:a:facebook:hhvm:4.28.1:*:*:*:*:*:*:* Versions 4.28.1 Vulnerable ·Meta
Remediation
- Fix · CNA HHVM (Facebook) Fixed in 3.30.12
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Facebook HHVM 3.30.12, unspecified
3 records Highest priority Priority MEDIUM 3 MEDIUM
Other records, highest priority first
- TI-2019-08935 An invalid free in mb_detect_order can cause the application to crash or potentially…Priority MEDIUM 48
- TI-2019-08941 Various APC functions accept keys containing null bytes as input, leading to premature…Priority MEDIUM 45
Timeline
- 2026-10-02 Threatist record created from CVE-2019-11935
- 2026-10-03 Alias added: GHSA-447v-pq45-237q
References
More Meta Hhvm vulnerabilities
- TI-2018-04659 Improper input validation in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2022-17147 Broken or risky cryptographic algorithm in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2019-08934 Memory corruption in Meta HHVM CVSS 3.1CRITICAL 9.8
- TI-2021-06352 Heap-based buffer overflow in Meta folly CVSS 3.1CRITICAL 9.8
- TI-2019-08935 An invalid free in mb_detect_order can cause the application to crash or potentially… CVSS 3.1CRITICAL 9.8
- TI-2016-05898 Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2019-11935 · CVE Program
- CVE-2019-11935 · NVD
- FIRST EPSS
- GHSA-447v-pq45-237q · GitHub Advisory Database · CC BY 4.0
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