GHSA-rx7m-68vc-ppxh
PhpSpreadsheet vulnerable to SSRF when reading and displaying a processed HTML document in the browser
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
phpoffice/phpspreadsheet🐘phpoffice/phpspreadsheet🐘phpoffice/phpspreadsheet🐘phpoffice/phpspreadsheet🐘phpoffice/phpspreadsheetReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Product: PhpSpreadsheet
Version: 3.8.0
CWE-ID: CWE-918: Server-Side Request Forgery (SSRF)
CVSS vector v.3.1: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVSS vector v.4.0: 8.7 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
Description: SSRF occurs when a processed HTML document is read and displayed in the browser
Impact: Server-Side Request Forgery
Vulnerable component: the PhpOffice\PhpSpreadsheet\Worksheet\Drawing class, setPath method
Exploitation conditions: getting a string from the user that is passed to the HTML reader
Mitigation: improved processing of the $path variable of the setPath method of the PhpOffice\PhpSpreadsheet\Worksheet\Drawing class is needed
Researcher: Aleksey Solovev (Positive Technologies)
Research
The researcher discovered zero-day vulnerability Server-Side Request Forgery (SSRF) (in the setPath method of the PhpOffice\PhpSpreadsheet\Worksheet\Drawing class) in Phpspreadsheet.
The latest version (3.8.0) of the phpoffice/phpspreadsheet library was installed. Below are the details of the installation:
Listing 1. Installing the phpoffice/phpspreadsheet library
$ composer require phpoffice/phpspreadsheet --prefer-source
The code that processes the HTML string with further rendering and displaying the result in the browser. Listing 2. Executable file index.php using the PhpSpreadsheet library
<?php
require __DIR__ . '/vendor/autoload.php';
$inputFileType = 'Html';
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
$inputFileName = './doc/file.html';
$spreadsheet = $reader->load($inputFileName);
$writer = new \PhpOffice\PhpSpreadsheet\Writer\Html($spreadsheet);
print($writer->generateHTMLAll());
Also, the ./doc/file.html has the following content: the img tag with the src attribute, which contains the value http:// 127.0.0.1:1337
Listing 3. The ./doc/file.html file
<table>
<tr>
<img src="http://127.0.0.1:1337">
</tr>
</table>
The vulnerability lies in the setPath method of the PhpOffice\PhpSpreadsheet\Worksheet\Drawing class.
Figure 1. The PhpOffice\PhpSpreadsheet\Worksheet\Drawing class, setPath method.
Figure 2 below demonstrates the SSRF vulnerability exploitation.
Figure 2. Demonstration of the SSRF vulnerability exploitation
Also, there is code on line 154 that could potentially be used by an attacker to perform unsafe deserialization via the phar archive and the file_exists method.
Figure 3. Opportunity to perform phar deserialization
Please, assign all credits to: Aleksey Solovev (Positive Technologies)
Credit
Aleksey Solovev (Positive Technologies)
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | phpoffice/phpspreadsheet | all versions | 1.30.0 |
| 🐘Packagist | phpoffice/phpspreadsheet | ≥ 2.0.0&&< 2.1.12 | 2.1.12 |
| 🐘Packagist | phpoffice/phpspreadsheet | ≥ 2.2.0&&< 2.4.0 | 2.4.0 |
| 🐘Packagist | phpoffice/phpspreadsheet | ≥ 3.0.0&&< 3.10.0 | 3.10.0 |
| 🐘Packagist | phpoffice/phpspreadsheet | ≥ 4.0.0&&< 5.0.0 | 5.0.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpoffice/phpspreadsheet. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update phpoffice/phpspreadsheet to 1.30.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-rx7m-68vc-ppxh is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-rx7m-68vc-ppxh is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-rx7m-68vc-ppxh. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-rx7m-68vc-ppxh in your dependencies?
O3 detects GHSA-rx7m-68vc-ppxh across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.