Out-of-bounds read in the HTTP stream wrapper when following a redirect with an empty Location header
At a glance
Severity
MEDIUM 5.8
EPSS
EPSS 0.34 % · percentile 27 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
php
NVD status
Analyzed
Description
When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location. The value of that out-of-bounds byte decides which redirect target is built, so a malicious server controls whether the client is sent to the host root or to the current directory.
