CVE-2019-9023 is a critical heap-based buffer over-read vulnerability affecting PHP versions before 5.6.40, 7.1.26, 7.2.14, and 7.3.1. It arises in mbstring regular expression functions when processing invalid multibyte data within regular expression patterns. With a CVSS score of 9.8 (Critical), this vulnerability has a network attack vector, low attack complexity, and can lead to complete compromise of confidentiality, integrity, and availability. Its FAUCET Risk Score is 96/100, indicating high potential impact. While not listed in CISA's KEV catalog and lacking public exploit code on Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community discussion with over 10 mentions, suggesting awareness and potential for future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.6.40CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
>= 7.0.0, < 7.1.26CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
>= 7.2.0, < 7.2.14CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
>= 7.3.0, < 7.3.1CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.