# CVE-2019-9808: firefox: If WebRTC permission is requested from documents with data: or blob: URLs, the permission notifications do not proper...

CVE-2019-9808 is fixed in 4 products on 1 platform, first by firefox 66.0+build3-0ubuntu0.18.04.1, released March 19, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-9808
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0040
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 19, 2019

## Description

If WebRTC permission is requested from documents with data: or blob: URLs, the permission notifications do not properly display the originating domain. The notification states "Unknown origin" as the requestee, leading to user confusion about which site is asking for this permission. This vulnerability affects Firefox < 66.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 66.0+build3-0ubuntu0.18.04.1 | [firefox 66.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-66.0-build3-0ubuntu0.18.04.1.md) | Mar 19, 2019 |
| Linux | firefox-globalmenu Ubuntu 18.04.6 LTS (bionic) | 66.0+build3-0ubuntu0.18.04.1 | [firefox-globalmenu 66.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-globalmenu-66.0-build3-0ubuntu0.18.04.1.md) | Mar 19, 2019 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 66.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 66.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-66.0-build3-0ubuntu0.18.04.1.md) | Mar 19, 2019 |
| Linux | firefox-testsuite Ubuntu 18.04.6 LTS (bionic) | 66.0+build3-0ubuntu0.18.04.1 | [firefox-testsuite 66.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-testsuite-66.0-build3-0ubuntu0.18.04.1.md) | Mar 19, 2019 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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