CVE-2022-31110
MEDIUMCVE-2022-31110 is a medium-severity (CVSS 5.3) Uncontrolled Resource Consumption vulnerability in rsshub. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2022-31110 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Denial of Service (DoS) vulnerability in RSSHub
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
rsshubnpmDescription
RSSHub is an open source, extensible RSS feed generator. In commits prior to 5c4177441417 passing some special values to the filter and filterout parameters can cause an abnormally high CPU. This results in an impact on the performance of the servers and RSSHub services which may lead to a denial of service. This issue has been fixed in commit 5c4177441417 and all users are advised to upgrade. There are no known workarounds for this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | rsshub | all versions | No fix |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rsshub. 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.
Remediation status
No patched version of rsshub has shipped for CVE-2022-31110 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-2022-31110 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-2022-31110. 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-2022-31110 in your dependencies?
O3 detects CVE-2022-31110 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.