VULNERABILITY INTELLIGENCE
CVE-2019-9023
CVSS score9.8 CRITICAL
EPSS probability9.32%
CISA KEVNot currently listed
Published2019-02-22
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. A number of heap-based buffer over-read instances are present in mbstring regular expression functions when supplied with invalid multibyte data. These occur in ext/mbstring/oniguruma/regcomp.c, ext/mbstring/oniguruma/regexec.c, ext/mbstring/oniguruma/regparse.c, ext/mbstring/oniguruma/enc/unicode.c, and ext/mbstring/oniguruma/src/utf32_be.c when a multibyte regular expression pattern contains invalid multibyte sequences.
Weakness classification
- CWE-125: Out-of-bounds Read
Primary references
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory