PoC Index

CVE-2019-20444

CRITICAL 9.1EPSS 8.9%

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

CVSS v3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v2.0
6.4 MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N
EPSS
8.91% chance of exploitation in the next 30 days, 95th percentile
Published
2020-01-29
Updated
2025-07-01

Proof-of-concept exploits (1)

References

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