# CVE-2022-46873: Mozilla Firefox and 2 others: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVE-2022-46873 is fixed in 5 products on 2 platforms, first by firefox 108.0+build2-0ubuntu0.18.04.1, released December 13, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-46873
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0075
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 13, 2022
- Weakness: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-46873

## Description

Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an attacker who was able to inject markup into a page otherwise protected by a Content Security Policy may have been able to inject executable script. This would be severely constrained by the specified Content Security Policy of the document. This vulnerability affects Firefox < 108.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox (en-US) | 108.0 | [Mozilla Firefox (en-US) 108.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-108.0.md) | Dec 14, 2022 |
| Windows apps | Mozilla Firefox ESR (en-US) | 115.4.0 | [Mozilla Firefox ESR (en-US) 115.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-115.4.0.md) | Oct 17, 2023 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 108.0+build2-0ubuntu0.18.04.1 | [firefox 108.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-108.0-build2-0ubuntu0.18.04.1.md) | Dec 13, 2022 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 108.0+build2-0ubuntu0.20.04.1 | [firefox 108.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-108.0-build2-0ubuntu0.20.04.1.md) | Dec 13, 2022 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 108.0+build2-0ubuntu0.18.04.1 | [firefox-geckodriver 108.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-108.0-build2-0ubuntu0.18.04.1.md) | Dec 13, 2022 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 108.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 108.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-108.0-build2-0ubuntu0.20.04.1.md) | Dec 13, 2022 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 108.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 108.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-108.0-build2-0ubuntu0.18.04.1.md) | Dec 13, 2022 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 108.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 108.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-108.0-build2-0ubuntu0.20.04.1.md) | Dec 13, 2022 |

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Data as of 2026-11-08T06:59:42Z 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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