{"id":"CVE-2026-108360","title":"PhpSpreadsheet: SSRF whitelist bypass via unre-validated HTTP redirect in Drawing::setPath external image loading","summary":"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 setAl…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-863","CWE-918"],"vendor":"PHPOffice","product":"PhpSpreadsheet","affected":["PhpSpreadsheet < 1.30.7","PhpSpreadsheet >= 2.0.0, < 2.1.19","PhpSpreadsheet >= 2.2.0, < 2.4.8","PhpSpreadsheet >= 3.3.0, < 3.10.8","PhpSpreadsheet >= 4.0.0, < 5.10.0"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T17:26:59.148Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108360","references":[{"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2phh-27fw-q4gc","label":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2phh-27fw-q4gc"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f4bb77ab0e66","label":"https://github.com/PHPOffice/PhpSpreadsheet/commit/299993894dce37aa3b64aa23e9a3f4bb77ab0e66"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/94590951d76a250a5fc1ecf69a0b3f7439a9af49","label":"https://github.com/PHPOffice/PhpSpreadsheet/commit/94590951d76a250a5fc1ecf69a0b3f7439a9af49"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738","label":"https://github.com/PHPOffice/PhpSpreadsheet/commit/980b5c294493856f1a25754f1e8a1d2185b93738"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce57303bb07af9","label":"https://github.com/PHPOffice/PhpSpreadsheet/commit/9a0b48622ebfe93fa48cb9bc09ce57303bb07af9"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4b028b20e86c","label":"https://github.com/PHPOffice/PhpSpreadsheet/commit/da13f40e8760d599b0e8a296017d4b028b20e86c"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7","label":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.7"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19","label":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.19"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8","label":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.8"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8","label":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.8"},{"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0","label":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.10.0"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T22:00:50.353Z","slug":"CVE-2026-108360","body":"## Overview\n\nPhpSpreadsheet 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.\n\n## Affected\n\n- `PhpSpreadsheet < 1.30.7`\n- `PhpSpreadsheet >= 2.0.0, < 2.1.19`\n- `PhpSpreadsheet >= 2.2.0, < 2.4.8`\n- `PhpSpreadsheet >= 3.3.0, < 3.10.8`\n- `PhpSpreadsheet >= 4.0.0, < 5.10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}