UN
Product
Undertow
by Redhat · last CVE Mar 27, 2026
39
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 7High 18Medium 13Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2020-1757
8.1
2%
Apr 21
A flaw was found in all undertow-2.x.x SP1 versions prior to undertow-2.0.30.SP1, all undertow-1.x.x and undertow-2.x.x versions prior to undertow-2.1.0.Final, where the Servlet…
Affected: before 2.1.0; 2.0.0; 2.0.25; 2.0.26; 2.0.28; 2.0.28
CVE-2025-9784
7.5
2%
Sep 2
Undertow: undertow madeyoureset http/2 ddos vulnerability
Affected: All versions, or not specified
CVE-2023-5379
7.5
1%
Dec 12
A flaw was found in Undertow
Affected: All versions, or not specified
CVE-2023-3223
7.5
3%
Sep 27
A flaw was found in undertow
Affected: before 2.2.24
CVE-2023-1108
7.5
2%
Sep 14
A flaw was found in undertow
Affected: before 2.2.24; 2.3.0 before 2.3.5
CVE-2022-4492
7.5
1%
Feb 23
The undertow client is not checking the server identity presented by the server certificate in https connections
Affected: 2.7.0
CVE-2022-1319
7.5
2%
Aug 31
A flaw was found in Undertow
Affected: before 2.2.17; 2.2.17; 2.2.17; 2.2.17; 2.2.19; 2.2.19; +1 more
CVE-2022-1259
7.5
1%
Aug 31
A flaw was found in Undertow
Affected: through 2.2.17; 2.2.18; 2.2.19
CVE-2021-3859
7.5
2%
Aug 26
A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2
Affected: before 2.2.15
CVE-2021-3690
7.5
2%
Aug 23
A flaw was found in Undertow
Affected: before 2.0.40; 2.1.0 before 2.2.10
CVE-2022-2053
7.5
1%
Aug 5
When a POST request comes through AJP and the request exceeds the max-post-size limit (maxEntitySize), Undertow's AjpServerRequestConduit implementation closes a connection…
Affected: before 2.2.19; 2.3.0
CVE-2019-19343
7.5
2%
Mar 23
A flaw was found in Undertow when using Remoting as shipped in Red Hat Jboss EAP before version 7.2.4
Affected: before 2.0.25; 2.0.25
CVE-2020-27782
7.5
1%
Feb 23
A flaw was found in the Undertow AJP connector
Affected: 2.0.33; 2.1.5; 2.2.3
CVE-2020-10705
7.5
1%
Jun 10
A flaw was discovered in Undertow in versions before Undertow 2.1.1.Final where certain requests to the "Expect: 100-continue" header may cause an out of memory error
Affected: before 2.1.1
CVE-2019-14888
7.5
2%
Jan 23
A vulnerability was found in the Undertow HTTP server in versions before 2.0.28.SP1 when listening on HTTPS
Affected: through 2.0.28
CVE-2019-10184
7.5
3%
Jul 25
undertow before version 2.0.23.Final is vulnerable to an information leak issue
Affected: before 2.0.23
CVE-2017-2670
7.5
4%
Jul 27
It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS
Affected: before 1.3.28
CVE-2017-12165
7.5
2%
Jul 27
It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling
Affected: 1.0.0 before 1.3.31; 1.4.0 before 1.4.17; 2.0.0
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