CVE-2026-7568

Summary

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.

Affected Software

VendorProductVersion RangeStatus
PHP GroupPHP8.2.* < 8.2.31affected
PHP GroupPHP8.3.* < 8.3.31affected
PHP GroupPHP8.4.* < 8.4.21affected
PHP GroupPHP8.5.* < 8.5.6affected

Weaknesses

  • CWE-190: CWE-190 Integer Overflow or Wraparound
  • CWE-125: CWE-125 Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

php: signed integer overflow in metaphone()

Additional References

References