CVE-2024-2653
HIGHCVE-2024-2653 is a high-severity (CVSS 8.2) vulnerability in amphp/http. O3 Security confirms whether CVE-2024-2653 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
CVE-2024-2653
Real-World Exposure
amphp/http🐘amphp/http🐘amphp/http-clientReal-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
amphp/http will collect CONTINUATION frames in an unbounded buffer and will not check a limit until it has received the set END_HEADERS flag, resulting in an OOM crash.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | amphp/http | ≥ 2.0.0&&< 2.1.1 | 2.1.1 |
| 🐘Packagist | amphp/http | all versions | 1.7.3 |
| 🐘Packagist | amphp/http-client | ≥ 4.0.0-rc10 | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for amphp/http. 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 amphp/http to 2.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-2653 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 CVE-2024-2653 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-2024-2653. 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-2024-2653 in your dependencies?
O3 detects CVE-2024-2653 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.