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CVE-2026-6104
CRITICAL(9.1)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Risk Signal Score23/100 — NIEDRIG
- CVSS 9.1 — Kritisch
Erwähnungen (letzte 60 Tage)
Artikel
EPSS-Score
0.5%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
9.1
Technische Schwere
Beschreibung
In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, the code incorrectly assumes that when strncasecmp() returns 0 it means the strings have the same length. This can lead to out-of-bounds read of global memory, potentially causing a crash or information disclosure or crash. Affected functions include mb_convert_encoding(), mb_detect_encoding(), mb_convert_variables(), and mb_detect_order(), as well as the mbstring.detect_order and mbstring.http_output INI settings.