CVE-2019-11935 json
Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory.
published 2019-12-04 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3592
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
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.
Patch / fix
Exploit prediction
1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Facebook HHVM
Classification
References
-
github.com
/facebook/hhvm/commit/1c518555dba6ceb45d5ba61845b96e261219c3b7
patch, third-party-advisory
-
hhvm.com
/blog/2019/10/28/security-update.html
vendor-advisory
-
facebook.com
/security/advisories/cve-2019-11935
vendor-advisory
Sources
- CVE List CVE-2019-11935
- NVD CVE-2019-11935
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