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Package details: pkg:mozilla/Firefox@91.0.1
purl pkg:mozilla/Firefox@91.0.1
Vulnerabilities affecting this package (0)
Vulnerability Summary Fixed by
This package is not known to be affected by vulnerabilities.
Vulnerabilities fixed by this package (1)
Vulnerability Summary Aliases
VCID-9kc8-k5kc-u7em Firefox incorrectly accepted a newline in a HTTP/3 header, interpreting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. CVE-2021-29991

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-01T13:17:13.196938+00:00 Mozilla Importer Fixing VCID-9kc8-k5kc-u7em https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2021/mfsa2021-37.yml 38.0.0