---
cve: "CVE-2026-7568"
severity: "MEDIUM"
cvss: 6.3
epss: "46%"
vendor: "PHP Group"
kev: false
exploited: false
published: "2026-05-10 05:16:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T01:53:39+02:00"
---

# CVE-2026-7568

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/RE:L/U:Amber
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57>
- <https://access.redhat.com/errata/RHSA-2026:22142>
- <https://access.redhat.com/errata/RHSA-2026:22143>
- <https://access.redhat.com/errata/RHSA-2026:22305>
- <https://access.redhat.com/errata/RHSA-2026:22649>
- <https://access.redhat.com/errata/RHSA-2026:23388>
- <https://access.redhat.com/errata/RHSA-2026:33449>
- <https://access.redhat.com/errata/RHSA-2026:34354>
- <https://access.redhat.com/security/cve/CVE-2026-7568>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2468566>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7568.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-7568) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_