CVE-2026-7568: fallo de gravedad media en PHP
Signed integer overflow in metaphone()
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.3epss 0.5%
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: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
Productos afectados
PHP Group · PHPCVEs relacionadas — PHP
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://access.redhat.com/errata/RHSA-2026:22142https://access.redhat.com/errata/RHSA-2026:22143https://access.redhat.com/errata/RHSA-2026:22305https://access.redhat.com/errata/RHSA-2026:22649https://access.redhat.com/errata/RHSA-2026:23388https://access.redhat.com/errata/RHSA-2026:33449https://access.redhat.com/errata/RHSA-2026:34354https://access.redhat.com/security/cve/CVE-2026-7568https://bugzilla.redhat.com/show_bug.cgi?id=2468566https://github.com/php/php-src/security/advisories/GHSA-96wq-48vp-hh57https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7568.json