Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an attacker who was able to inject markup into a page…

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.

Scores

EPSS (exploitation in 30 days)

0.75% · top 45% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

• Firefox did not implement the CSP directive unsafe-hashes
• CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (opens in a new tab)All about CWE-74 and its CVEs

Affected products

• Mozilla · Firefox

  • affected unspecified – < 108

References (3)

• https://www.mozilla.org/security/advisories/mfsa2022-51/ (opens in a new tab)x_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=1644790 (opens in a new tab)x_transferred
• GLSA-202305-06 (opens in a new tab)vendor-advisoryx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-46873](https://trackcve.app/badge/CVE-2022-46873.svg)](https://trackcve.app/cve/CVE-2022-46873)

Record last updated 15 Apr 2025, 14:06 UTC.