Known Vulnerabilities for Undertow by Redhat

Listed below are 10 of the newest known vulnerabilities associated with "Undertow" by "Redhat".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-28369 A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spac... Not Provided 2026-03-27 2026-04-01
CVE-2026-28368 A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where heade... Not Provided 2026-03-27 2026-04-01
CVE-2026-28367 A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminat... Not Provided 2026-03-27 2026-04-01
CVE-2024-3884 A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinit... Not Provided 2025-12-03 2026-04-01
CVE-2021-20220 A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-201... 4.8 - MEDIUM 2021-02-23 2022-02-22
CVE-2021-3859 A flaw was found in Undertow that tripped the client-side invocation timeout with certain calls made over HTTP2. This flaw al... 7.5 - HIGH 2022-08-26 2022-12-13
CVE-2021-3690 A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw a... 7.5 - HIGH 2022-08-23 2023-07-07
CVE-2021-3629 A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially ... 5.9 - MEDIUM 2022-05-24 2023-02-07
CVE-2021-3597 A flaw was found in undertow. The HTTP2SourceChannel fails to write the final frame under some circumstances, resulting in a ... 5.9 - MEDIUM 2022-05-24 2022-11-10
CVE-2020-10687 A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-20... 4.8 - MEDIUM 2020-09-23 2023-11-07
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationRedhatUndertow7.1.2AllAllAll
ApplicationRedhatUndertow2.2.4AllAllAll
ApplicationRedhatUndertow2.2.3AllAllAll
ApplicationRedhatUndertow2.2.2AllAllAll
ApplicationRedhatUndertow2.2.1AllAllAll
ApplicationRedhatUndertow2.2.0AllAllAll
ApplicationRedhatUndertow2.1.6AllAllAll
ApplicationRedhatUndertow2.1.1AllAllAll
ApplicationRedhatUndertow2.1.0AllAllAll
ApplicationRedhatUndertow2.0.9AllAllAll
ApplicationRedhatUndertow2.0.8AllAllAll
ApplicationRedhatUndertow2.0.7AllAllAll
ApplicationRedhatUndertow2.0.6AllAllAll
ApplicationRedhatUndertow2.0.5AllAllAll
ApplicationRedhatUndertow2.0.4AllAllAll
ApplicationRedhatUndertow2.0.30AllAllAll
ApplicationRedhatUndertow2.0.30-AllAll
ApplicationRedhatUndertow2.0.30sp1AllAll
ApplicationRedhatUndertow2.0.3AllAllAll
ApplicationRedhatUndertow2.0.29AllAllAll
Results limited to 20 most recent known configurations
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