CVE-2020-15263 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in orchid/platform. A fix is available for orchid/platform — see the affected versions and patch details below.
Inline attribute values were not processed.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
orchid/platformReal-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
In platform before version 9.4.4, inline attributes are not properly escaped. If the data that came from users was not escaped, then an XSS vulnerability is possible. The issue was introduced in 9.0.0 and fixed in 9.4.4.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | orchid/platform | ≥ 9.0.0&&< 9.4.4 | 9.4.4composer require orchid/platform:^9.4.4 |
Affected Products
platformorchidDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for orchid/platform, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update orchid/platform to 9.4.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-15263 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.
Frequently Asked Questions
Is CVE-2020-15263 in your dependencies?
Find it across Packagist, including transitive dependencies.