CVE-2026-93682

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.

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f	Vendor Advisory Exploit
https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f	Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::

History

23 Oct 2026, 14:58

Type	Values Removed	Values Added
CPE		cpe:2.3:a:php:php::::::::
References	~~() https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f -~~	() https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f - Vendor Advisory, Exploit
First Time		Php php Php

25 Sep 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f -~~	() https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f -

25 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 20:17

Updated : 2026-10-23 14:58

NVD link : CVE-2026-93682

Mitre link : CVE-2026-93682

CVE.ORG link : CVE-2026-93682

JSON object : View

Products Affected

php

php

CWE

CWE-125

Out-of-bounds Read

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