PhpSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist
Summary
| CVE | CVE-2026-59931 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-28 18:17:22 UTC |
| Updated | 2026-07-28 19:17:39 UTC |
| Description | PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the WEBSERVICE() domain whitelist can be bypassed via an HTTP redirect (SSRF). In Calculation/Web/Service.php, the webService() method validates a URL's host against the whitelist set via Spreadsheet::setDomainWhiteList(), then fetches content with file_get_contents($url, false, $ctx); because PHP's HTTP stream wrapper follows 301/302 redirects automatically (up to 20 hops) and the redirect target is never re-validated, an attacker who can trigger a redirect from a whitelisted domain can reach arbitrary URLs, including internal addresses. An attacker able to upload XLSX files to an application that uses setDomainWhiteList() and getCalculatedValue() can achieve a full-read SSRF, returning up to 32,767 bytes of the response body as a cell's calculated value, which enables exfiltration of cloud metadata (AWS/GCP/Azure credentials via http://169.254.169.254/), access to internal-only services, and internal port scanning (the port is not validated). This issue has been fixed in versions 5.8.1, 3.10.7, 2.4.7, 2.1.18, and 1.30.6. |
Risk And Classification
Primary CVSS: v3.1 7.7 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| 3.1 | CNA | DECLARED | 7.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | PHPOffice | PhpSpreadsheet | affected >= 4.0.0, < 5.8.1 | Not specified |
| CNA | PHPOffice | PhpSpreadsheet | affected >= 3.3.0, < 3.10.7 | Not specified |
| CNA | PHPOffice | PhpSpreadsheet | affected >= 2.2.0, < 2.4.7 | Not specified |
| CNA | PHPOffice | PhpSpreadsheet | affected >= 2.0.0, < 2.1.18 | Not specified |
| CNA | PHPOffice | PhpSpreadsheet | affected < 1.30.6 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.18 | [email protected] | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-6hq5-7373-42rg | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.6 | [email protected] | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/commit/7ef7b25e8548a6ded79dac74e2e2c... | [email protected] | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.8.1 | [email protected] | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.7 | [email protected] | github.com | |
| github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.7 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.