CVE-2025-1734

Summary

In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.

Affected Software

VendorProductVersion RangeStatus
PHP GroupPHP8.1.* < 8.1.32affected
PHP GroupPHP8.2.* < 8.2.28affected
PHP GroupPHP8.3.* < 8.3.19affected
PHP GroupPHP8.4.* < 8.4.5affected

Weaknesses

  • CWE-20: CWE-20 Improper Input Validation

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References