{"vulnerability": "CVE-2021-29991", "sightings": [{"uuid": "be9d24df-32e8-4c8c-9dea-c8e76ca2bea5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-29991", "type": "seen", "source": "https://t.me/cibsecurity/31699", "content": "\u203c CVE-2021-29991 \u203c\n\nFirefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-11-03T06:23:31.000000Z"}]}