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2.1 Low

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…

Description

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 user-controlled input can influence the encoding passed to mb_regex_encoding().

Affected products and versions

Product Affected versions Fixed in
PHP 8.5 earliest → < 8.5.6 8.5.6
PHP 8.4 earliest → < 8.4.21 8.4.21
PHP 8.3 earliest → < 8.3.31 8.3.31
PHP 8.2 earliest → < 8.2.31 8.2.31

References

Timeline

  1. Published
  2. Last modified

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