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CVE-2019-9023
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…
Critical9.8EPSS 9.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 9.3% · top 4.6% of all CVEs (5 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
n/a
- affected n/a
References (19)
- USN-3902-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://bugs.php.net/bug.php?id=77382 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.php.net/bug.php?id=77418 (opens in a new tab)x_refsource_MISCx_transferred
- DSA-4398 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugs.php.net/bug.php?id=77371 (opens in a new tab)x_refsource_MISCx_transferred
- USN-3902-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 107156 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://bugs.php.net/bug.php?id=77370 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.php.net/bug.php?id=77385 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.php.net/bug.php?id=77394 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.php.net/bug.php?id=77381 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20190321-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.f5.com/csp/article/K06372014 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2019:1256 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:1293 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:1572 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2019:1573 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2019:2519 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:3299 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_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)
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[](https://trackcve.app/cve/CVE-2019-9023)Record last updated .