CVE-2021-41236 is a medium-severity (CVSS 4.8) vulnerability in oro/platform. A fix is available for oro/platform — see the affected versions and patch details below.
XSS vulnerability on email template preview page
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2021-41236.
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.
How urgent is this, really
CVE-2021-41236 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
oro/platform🐘oro/platform🐘oro/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
OroPlatform is a PHP Business Application Platform. In affected versions the email template preview is vulnerable to XSS payload added to email template content. An attacker must have permission to create or edit an email template. For successful payload, execution the attacked user must preview a vulnerable email template. There are no workarounds that address this vulnerability. Users are advised to upgrade as soon as is possible.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | oro/platform | ≥ 3.1.0&&< 3.1.21 | 3.1.21composer require oro/platform:^3.1.21 |
| 🐘Packagist | oro/platform | ≥ 4.1.0&&< 4.1.14 | 4.1.14composer require oro/platform:^4.1.14 |
| 🐘Packagist | oro/platform | ≥ 4.2.0&&< 4.2.8 | 4.2.8composer require oro/platform:^4.2.8 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for oro/platform, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update oro/platform to 3.1.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-41236 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2021-41236 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2021-41236. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2021-41236 in your dependencies?
O3 Security finds CVE-2021-41236 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.