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PHP Incorrect Calculation of Buffer Size Vulnerability - CVE-2025-1861 - Vulnerability Database
PHP

PHP Incorrect Calculation of Buffer Size Vulnerability - CVE-2025-1861

Critical
Reference: CVE-2025-1861
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2025-1861
Title: PHP Incorrect Calculation of Buffer Size Vulnerability
Overview:

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 parsing HTTP redirect in the response to an HTTP request there is currently limit on the location value size caused by limited size of the location buffer to 1024. However as per RFC9110 the limit is recommended to be 8000. This may lead to incorrect URL truncation and redirecting to a wrong location.