CVE-2026-93682
Last modified
CVE-2026-93682 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | >= 8.2.0, < 8.2.34 |
| Php | Php | >= 8.3.0, < 8.3.35 |
| Php | Php | >= 8.4.0, < 8.4.26 |
| Php | Php | >= 8.5.0, < 8.5.11 |
References
- https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5fVendor Advisory, Exploit
- https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5fVendor Advisory, Exploit
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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