# CVE-2019-11721: firefox: The unicode latin 'kra' character can be used to spoof a standard 'k' character in the addressbar

CVE-2019-11721 is fixed in 4 products on 1 platform, first by firefox 68.0+build3-0ubuntu0.18.04.1, released July 10, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-11721
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0139
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 10, 2019

## Description

The unicode latin 'kra' character can be used to spoof a standard 'k' character in the addressbar. This allows for domain spoofing attacks as do not display as punycode text, allowing for user confusion. This vulnerability affects Firefox < 68.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 68.0+build3-0ubuntu0.18.04.1 | [firefox 68.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-68.0-build3-0ubuntu0.18.04.1.md) | Jul 10, 2019 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 68.0+build3-0ubuntu0.18.04.1 | [firefox-geckodriver 68.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-68.0-build3-0ubuntu0.18.04.1.md) | Jul 10, 2019 |
| Linux | firefox-globalmenu Ubuntu 18.04.6 LTS (bionic) | 68.0+build3-0ubuntu0.18.04.1 | [firefox-globalmenu 68.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-globalmenu-68.0-build3-0ubuntu0.18.04.1.md) | Jul 10, 2019 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 68.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 68.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-68.0-build3-0ubuntu0.18.04.1.md) | Jul 10, 2019 |

---

Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.