The vulnerability of the mbregexuringencoding() function in the PHP interpreter allows a hacker to trigger a service failure.

The vulnerability of the mbregexuringencoding function in the PHP interpreter is related to discrepancies in the lists of encodings between the Oniguruma library and mbfl, as a result of a pointer assignment error. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2026-7259

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, a mismatch between encoding lists in Oniguruma and mbfl leads to a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when...