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CVE-2020-7238
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a…
High7.5EPSS 3.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
Timeline
ID reserved
By mitre
- 7 days later
· 7 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 3.6% · top 10% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.netty:netty-handlerGHSA-ff2w-cq2g-wv5f (opens in a new tab)
References (18)
- https://netty.io/news/ (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/jdordonezn/CVE-2020-72381/issues/1 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2020:0497 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [debian-lts-announce] 20200219 [SECURITY] [DLA 2109-1] netty security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20200219 [SECURITY] [DLA 2110-1] netty-3.9 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2020:0601 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0606 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0605 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0567 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0806 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0811 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0804 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0805 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [debian-lts-announce] 20200904 [SECURITY] [DLA 2364-1] netty security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2020-66b5f85ccc (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- DSA-4885 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [cassandra-commits] 20210526 [jira] [Created] (CASSANDRA-16699) Security vulnerability CVE-2020-7238 for Netty (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [cassandra-commits] 20210526 [jira] [Updated] (CASSANDRA-16699) Security vulnerability CVE-2020-7238 for Netty (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-ff2w-cq2g-wv5f (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-7238)Record last updated .