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Vulnerability details: VCID-3mgs-vrus-q3ag
Vulnerability ID VCID-3mgs-vrus-q3ag
Aliases CVE-2019-20445
GHSA-p2v9-g2qv-p635
Summary HTTP Request Smuggling in Netty HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (4)
System Score Found at
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0497
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0567
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0601
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0605
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0606
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0804
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0805
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0806
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0811
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20445.json
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
epss 0.02837 https://api.first.org/data/v1/epss?cve=CVE-2019-20445
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-p2v9-g2qv-p635
generic_textual MODERATE https://github.com/netty/netty
generic_textual MODERATE https://github.com/netty/netty/compare/netty-4.1.43.Final...netty-4.1.44.Final
generic_textual MODERATE https://github.com/netty/netty/issues/9861
generic_textual MODERATE https://github.com/netty/netty/pull/9865
generic_textual MODERATE https://lists.apache.org/thread.html/r030beff88aeb6d7a2d6cd21342bd18686153ce6e26a4171d0e035663@%3Cissues.flume.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r1fcccf8bdb3531c28bc9aa605a6a1bea7e68cef6fc12e01faafb2fb5@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r205937c85817a911b0c72655c2377e7a2c9322d6ef6ce1b118d34d8d@%3Cdev.geode.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r2f2989b7815d809ff3fda8ce330f553e5f133505afd04ffbc135f35f@%3Cissues.spark.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r310d2ce22304d5298ff87f10134f918c87919b452734f9841d95682d@%3Ccommits.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r36fcf538b28f2029e8b4f6b9a772f3b107913a78f09b095c5b153a62@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r46f93de62b1e199f3f9babb18128681677c53493546f532ed88c359d@%3Creviews.spark.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r4d3f1d3e333d9c2b2f6e6ae8ed8750d4de03410ac294bcd12c7eefa3@%3Ccommits.cassandra.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r4ff40646e9ccce13560458419accdfc227b8b6ca4ead3a8a91decc74@%3Cissues.flume.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r640eb9b3213058a963e18291f903fc1584e577f60035f941e32f760a@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r6945f3c346b7af89bbd3526a7c9b705b1e3569070ebcd0964bcedd7d@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r70b1ff22ee80e8101805b9a473116dd33265709007d2deb6f8c80bf2@%3Ccommits.druid.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r7790b9d99696d9eddce8a8c96f13bb68460984294ea6fea3800143e4@%3Ccommits.pulsar.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r804895eedd72c9ec67898286eb185e04df852b0dd5fe53cf5b6138f9@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r81700644754e66ffea465c869cb477de25f8041e21598e8818fc2c45@%3Cdev.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r819aaeb9944bdcfca438dcc51f05650dc728daf64dfd7d774fc2499b@%3Ccommits.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r832724df393a7ef25ca4c7c2eb83ad2d6c21c74569acda5233f9f1ec@%3Ccommits.pulsar.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r959474dcf7f88565ed89f6252ca5a274419006cb71348f14764b183d@%3Ccommits.cassandra.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r96e08f929234e8ba1ef4a93a0fd2870f535a1f9ab628fabc46115986@%3Cdev.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r9b20cdac704cf9a583400350e2d5b576fa8417c18ddb961201676c60@%3Ccommits.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/ra1a71b576a45426af5ee65255be9596ff3181a342f4ba73b800db78f@%3Cdev.geode.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/ra2ace4bcb5cf487f72cbcbfa0f8cc08e755ec2b93d7e69f276148b08@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/ra9fbfe7d4830ae675bf34c7c0f8c22fc8a4099f65706c1bc4f54c593@%3Cissues.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/raaac04b7567c554786132144bea3dcb72568edd410c1e6f0101742e7@%3Cissues.flink.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rb5c065e7bd701b0744f9f28ad769943f91745102716c1eb516325f11@%3Cissues.spark.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rb84c57670ec48ef23f4d07973b7fa69f629b8e7fcfb48874362feb6f@%3Ccommits.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rbdb59c683d666130906a9c05a1d2b034c4cc08cda7ed41322bd54fe2@%3Cissues.flume.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rce71d33747010d32d31d90f5d737dae26291d96552f513a266c92fbb@%3Cnotifications.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e@%3Cissues.flink.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rdb69125652311d0c41f6066ff44072a3642cf33a4b5e3c4f9c1ec9c2@%3Ccommits.pulsar.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/re45ee9256d3233c31d78e59ee59c7dc841c7fbd83d0769285b41e948@%3Ccommits.druid.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rf5b2dfb7401666a19915f8eaef3ba9f5c3386e2066fcd2ae66e16a2f@%3Cdev.flink.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rfb55f245b08d8a6ec0fb4dc159022227cd22de34c4419c2fbb18802b@%3Cnotifications.zookeeper.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rff210a24f3a924829790e69eaefa84820902b7b31f17c3bf2def9114@%3Ccommits.druid.apache.org%3E
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2020/09/msg00004.html
generic_textual MODERATE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-20445
generic_textual MODERATE https://usn.ubuntu.com/4532-1
generic_textual MODERATE https://www.debian.org/security/2021/dsa-4885
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2020:0497
https://access.redhat.com/errata/RHSA-2020:0567
https://access.redhat.com/errata/RHSA-2020:0601
https://access.redhat.com/errata/RHSA-2020:0605
https://access.redhat.com/errata/RHSA-2020:0606
https://access.redhat.com/errata/RHSA-2020:0804
https://access.redhat.com/errata/RHSA-2020:0805
https://access.redhat.com/errata/RHSA-2020:0806
https://access.redhat.com/errata/RHSA-2020:0811
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20445.json
https://api.first.org/data/v1/epss?cve=CVE-2019-20445
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20444
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20445
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11612
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7238
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21290
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21295
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21409
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/netty/netty
https://github.com/netty/netty/compare/netty-4.1.43.Final...netty-4.1.44.Final
https://github.com/netty/netty/issues/9861
https://github.com/netty/netty/pull/9865
https://lists.apache.org/thread.html/r030beff88aeb6d7a2d6cd21342bd18686153ce6e26a4171d0e035663@%3Cissues.flume.apache.org%3E
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/r1fcccf8bdb3531c28bc9aa605a6a1bea7e68cef6fc12e01faafb2fb5@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r205937c85817a911b0c72655c2377e7a2c9322d6ef6ce1b118d34d8d@%3Cdev.geode.apache.org%3E
https://lists.apache.org/thread.html/r2f2989b7815d809ff3fda8ce330f553e5f133505afd04ffbc135f35f@%3Cissues.spark.apache.org%3E
https://lists.apache.org/thread.html/r310d2ce22304d5298ff87f10134f918c87919b452734f9841d95682d@%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r36fcf538b28f2029e8b4f6b9a772f3b107913a78f09b095c5b153a62@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r46f93de62b1e199f3f9babb18128681677c53493546f532ed88c359d@%3Creviews.spark.apache.org%3E
https://lists.apache.org/thread.html/r4d3f1d3e333d9c2b2f6e6ae8ed8750d4de03410ac294bcd12c7eefa3@%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/r4ff40646e9ccce13560458419accdfc227b8b6ca4ead3a8a91decc74@%3Cissues.flume.apache.org%3E
https://lists.apache.org/thread.html/r640eb9b3213058a963e18291f903fc1584e577f60035f941e32f760a@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r6945f3c346b7af89bbd3526a7c9b705b1e3569070ebcd0964bcedd7d@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r70b1ff22ee80e8101805b9a473116dd33265709007d2deb6f8c80bf2@%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r7790b9d99696d9eddce8a8c96f13bb68460984294ea6fea3800143e4@%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/r804895eedd72c9ec67898286eb185e04df852b0dd5fe53cf5b6138f9@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r81700644754e66ffea465c869cb477de25f8041e21598e8818fc2c45@%3Cdev.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r819aaeb9944bdcfca438dcc51f05650dc728daf64dfd7d774fc2499b@%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r832724df393a7ef25ca4c7c2eb83ad2d6c21c74569acda5233f9f1ec@%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/r959474dcf7f88565ed89f6252ca5a274419006cb71348f14764b183d@%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/r96e08f929234e8ba1ef4a93a0fd2870f535a1f9ab628fabc46115986@%3Cdev.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/r9b20cdac704cf9a583400350e2d5b576fa8417c18ddb961201676c60@%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/ra1a71b576a45426af5ee65255be9596ff3181a342f4ba73b800db78f@%3Cdev.geode.apache.org%3E
https://lists.apache.org/thread.html/ra2ace4bcb5cf487f72cbcbfa0f8cc08e755ec2b93d7e69f276148b08@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/ra9fbfe7d4830ae675bf34c7c0f8c22fc8a4099f65706c1bc4f54c593@%3Cissues.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/raaac04b7567c554786132144bea3dcb72568edd410c1e6f0101742e7@%3Cissues.flink.apache.org%3E
https://lists.apache.org/thread.html/rb5c065e7bd701b0744f9f28ad769943f91745102716c1eb516325f11@%3Cissues.spark.apache.org%3E
https://lists.apache.org/thread.html/rb84c57670ec48ef23f4d07973b7fa69f629b8e7fcfb48874362feb6f@%3Ccommits.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rbdb59c683d666130906a9c05a1d2b034c4cc08cda7ed41322bd54fe2@%3Cissues.flume.apache.org%3E
https://lists.apache.org/thread.html/rce71d33747010d32d31d90f5d737dae26291d96552f513a266c92fbb@%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e@%3Cissues.flink.apache.org%3E
https://lists.apache.org/thread.html/rdb69125652311d0c41f6066ff44072a3642cf33a4b5e3c4f9c1ec9c2@%3Ccommits.pulsar.apache.org%3E
https://lists.apache.org/thread.html/re45ee9256d3233c31d78e59ee59c7dc841c7fbd83d0769285b41e948@%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rf5b2dfb7401666a19915f8eaef3ba9f5c3386e2066fcd2ae66e16a2f@%3Cdev.flink.apache.org%3E
https://lists.apache.org/thread.html/rfb55f245b08d8a6ec0fb4dc159022227cd22de34c4419c2fbb18802b@%3Cnotifications.zookeeper.apache.org%3E
https://lists.apache.org/thread.html/rff210a24f3a924829790e69eaefa84820902b7b31f17c3bf2def9114@%3Ccommits.druid.apache.org%3E
https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html
https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html
https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html
https://lists.debian.org/debian-lts-announce/2020/09/msg00004.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/
https://nvd.nist.gov/vuln/detail/CVE-2019-20445
https://usn.ubuntu.com/4532-1
https://usn.ubuntu.com/4532-1/
https://www.debian.org/security/2021/dsa-4885
1798509 https://bugzilla.redhat.com/show_bug.cgi?id=1798509
950967 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950967
GHSA-p2v9-g2qv-p635 https://github.com/advisories/GHSA-p2v9-g2qv-p635
RHSA-2020:0922 https://access.redhat.com/errata/RHSA-2020:0922
RHSA-2020:0939 https://access.redhat.com/errata/RHSA-2020:0939
RHSA-2020:0951 https://access.redhat.com/errata/RHSA-2020:0951
RHSA-2020:1445 https://access.redhat.com/errata/RHSA-2020:1445
RHSA-2020:2321 https://access.redhat.com/errata/RHSA-2020:2321
RHSA-2020:2333 https://access.redhat.com/errata/RHSA-2020:2333
RHSA-2020:3192 https://access.redhat.com/errata/RHSA-2020:3192
RHSA-2020:3196 https://access.redhat.com/errata/RHSA-2020:3196
RHSA-2020:3197 https://access.redhat.com/errata/RHSA-2020:3197
RHSA-2024:5856 https://access.redhat.com/errata/RHSA-2024:5856
USN-4600-1 https://usn.ubuntu.com/4600-1/
USN-4600-2 https://usn.ubuntu.com/4600-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-20445.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Exploit Prediction Scoring System (EPSS)
Percentile 0.86125
EPSS Score 0.02837
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:00:04.679142+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/02/GHSA-p2v9-g2qv-p635/GHSA-p2v9-g2qv-p635.json 38.0.0