How severe is CVE-2015-9241?

No CVSS score has been assigned to CVE-2015-9241 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2015-9241?

CVE-2015-9241 affects the following packages: hapi (npm). Ecosystems affected: npm.

How do I fix CVE-2015-9241?

Update hapi to 11.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2015-9241 is resolved across your whole dependency graph.

How do I detect CVE-2015-9241 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for hapi. 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.

How do I mitigate CVE-2015-9241 if there is no patch (or I can't update yet)?

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 does O3 Security protect against CVE-2015-9241?

O3 pinpoints whether CVE-2015-9241 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is CVE-2015-9241 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2015-9241, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What type of vulnerability is CVE-2015-9241?

CVE-2015-9241 is classified as Uncontrolled Resource Consumption (CWE-400), Improper Input Validation (CWE-20). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2015-9241 published, and has it been updated?

CVE-2015-9241 was published on June 7, 2018 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2015-9241

Fix: jfhbrook/node-ecstatic#179

CVE-2015-9241 is a Uncontrolled Resource Consumption vulnerability in hapi. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2015-9241 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Denial of Service in hapi

Published

Jun 7, 2018

Updated

Nov 8, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 8, 2023 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

hapinpm

108Kdownloads / week

Description

Versions of hapi prior to 11.1.3 are affected by a denial of service vulnerability.

The vulnerability is triggered when certain input is passed into the If-Modified-Since or Last-Modified headers.

This causes an 'illegal access' exception to be raised, and instead of sending a HTTP 500 error back to the sender, hapi will continue to hold the socket open until timed out (default node timeout is 2 minutes).

Recommendation

Update to v11.1.3 or later

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`hapi`	all versions	11.1.3

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Certain input passed into the If-Modified-Since or Last-Modified headers…

github.comNVDOct 2019

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for hapi. 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 hapi to 11.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2015-9241 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-2015-9241 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-2015-9241. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Versions of `hapi` prior to 11.1.3 are affected by a denial of service vulnerability. The vulnerability is triggered when certain input is passed into the If-Modified-Since or Last-Modified headers. This causes an 'illegal access' exception to be raised, and instead of sending a HTTP 500 error back to the sender, hapi will continue to hold the socket open until timed out (default node timeout is 2 minutes). ## Recommendation Update to v11.1.3 or later

O3 Security · Impact-Aware SCA

Is CVE-2015-9241 in your dependencies?

O3 detects CVE-2015-9241 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works