{"id":"CVE-2026-108360","published":"2026-10-22T18:17:26.897","lastModified":"2026-10-23T19:42:24.553","description":"PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, Worksheet\\Drawing::setPath validates only the initial external-image URL with setIsWhitelisted when setAllowExternalImages is enabled. The HTTP stream context permits PHP to follow a redirect without applying the callback to the redirected URL, so a permitted image host can redirect the server to an internal address and cause a blind GET request. The response body is not returned to the attacker because the reader validates the downloaded content as an image and removes the temporary file, but internal GET-driven endpoints, network reachability, and cloud metadata endpoints may be reached. This issue is fixed in versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0.","cvssScore":6.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cwes":["CWE-863","CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f4bb77ab0e66","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/94590951d76a250a5fc1ecf69a0b3f7439a9af49","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce57303bb07af9","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4b028b20e86c","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2phh-27fw-q4gc","tags":[]}],"exploitRefs":[{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f4bb77ab0e66","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/94590951d76a250a5fc1ecf69a0b3f7439a9af49","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce57303bb07af9","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4b028b20e86c","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0","tags":[]},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2phh-27fw-q4gc","tags":[]}],"hasPoc":true,"ai":null}