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5.8 Medium

CVE-2026-93682 When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the…

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.

Affected products and versions

Product Affected versions Fixed in
PHP 8.5 earliest → < 8.5.11 8.5.11
PHP 8.4 earliest → < 8.4.26 8.4.26
PHP 8.3 earliest → < 8.3.35 8.3.35
PHP 8.2 earliest → < 8.2.34 8.2.34

References

Timeline

  1. Published
  2. Last modified

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