๐Ÿ” CVE Alert

CVE-2026-93682

MEDIUM 5.8

Out-of-bounds read in the HTTP stream wrapper when following a redirect with an empty Location header

CVSS Score
5.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-125
Vendor php group
Product php
Published Sep 25, 2026
Last Updated Sep 25, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Affected Versions

PHP Group / PHP
8.2.* < 8.2.34 8.3.* < 8.3.35 8.4.* < 8.4.26 8.5.* < 8.5.11

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
github.com: https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f

Credits

๐Ÿ” Ilia Alshanetsky Jordi Kroon David Carlier Xinchen Hui