Medium

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

Type: advisorySource: Official CVE List1 source record

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.

Announced 25 Sept 2026Group revision 1

Original source ↗

CVE-2026-93682

Primary source · Revision 4

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93682

PHP

Source reference: /containers/cna/affected/0/product

Affected versions: Not stated in this record
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "PHP Group",
    "product": "PHP",
    "versions": [
      {
        "status": "affected",
        "version": "8.2.*",
        "lessThan": "8.2.34",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.3.*",
        "lessThan": "8.3.35",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.4.*",
        "lessThan": "8.4.26",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.5.*",
        "lessThan": "8.5.11",
        "versionType": "semver"
      }
    ],
    "packageName": "ext-standard",
    "defaultStatus": "unaffected"
  }
]