CVE-2020-8226 is a medium-severity (CVSS 5.8) CWE-610 vulnerability in phpbb/phpbb. A fix is available for phpbb/phpbb — see the affected versions and patch details below.
phpBB Server-Side Request Forgery Vulnerability
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
phpbb/phpbb🐘phpbb/phpbbReal-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 vulnerability exists in phpBB <v3.2.10 and <v3.3.1 which allowed remote image dimensions check to be used to SSRF.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | phpbb/phpbb | ≥ 3.2.0&&< 3.2.10 | 3.2.10composer require phpbb/phpbb:^3.2.10 |
| 🐘Packagist | phpbb/phpbb | ≥ 3.3.0&&< 3.3.1 | 3.3.1composer require phpbb/phpbb:^3.3.1 |
Affected Products
phpbbphpbbDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpbb/phpbb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update phpbb/phpbb to 3.2.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-8226 is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
Frequently Asked Questions
Is CVE-2020-8226 in your dependencies?
Find it across Packagist, including transitive dependencies.