CVE-2026-93682
Out-of-bounds read in the HTTP stream wrapper when following a redirect with an empty Location header
- State
- Published
- Severity
- 5.8 Medium
- Published
- Sep 25, 2026
- Updated
- Sep 25, 2026
- Reserved
- Sep 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N | php |
Weaknesses
- CWE-125 Out-of-bounds read
Affected Products
| Product | Versions |
|---|---|
PHPPHP Group |
|
References
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