GHSA-8p2q-73gc-fxq5
GitHub Security Advisory
⚠ Unreviewed
HIGH
Has CVE
Advisory Details
Firefox 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.
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: November 26, 2025 6:30 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.