CVE-2026-9557
MEDIUMMautic Focus component Vulnerable to SSRF
Blast Radius
mautic/core🐘mautic/core🐘mautic/core🐘mautic/coreReal-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
A Server-Side Request Forgery (SSRF) vulnerability exists in Mautic's Focus component. Due to insufficient validation of user-supplied URLs, an authenticated user can trigger outbound HTTP requests from the hosting server, enabling internal network reconnaissance or forcing requests to arbitrary internal or external destinations.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | mautic/core | ≥ 4.0.0 | No fix |
| 🐘Packagist | mautic/core | ≥ 5.0.0&&< 5.2.11 | 5.2.11 |
| 🐘Packagist | mautic/core | ≥ 6.0.0&&< 6.0.9 | 6.0.9 |
| 🐘Packagist | mautic/core | ≥ 7.0.0&&< 7.1.2 | 7.1.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mautic/core. 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
No patched version of mautic/core has shipped for CVE-2026-9557 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
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 CVE-2026-9557 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 CVE-2026-9557. 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-2026-9557 in your dependencies?
O3 detects CVE-2026-9557 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.