Undertow
44 CVEs tracked. None of them is in CISA KEV.
This hub aggregates every CVE we track for Undertow, a product in the operating systems space. Use it to gauge the current risk picture and drill into individual advisories.
Undertow CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 2 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 0 |
| 2025-03 | 0 |
| 2025-04 | 0 |
| 2025-05 | 0 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 1 |
| 2025-10 | 0 |
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 1 |
| 2026-02 | 0 |
| 2026-03 | 3 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 0 |
Severity
How the 44 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical3
- High26
- Medium14
- Low1
Latest CVEs
The 15 most recently published vulnerabilities affecting Undertow.
- CVE-2026-28367Undertow: undertow: request smuggling via `\r\r\r` as a header block terminator8.7
- CVE-2026-28369Undertow: undertow: request smuggling via malformed http request headers8.7
- CVE-2026-28368Undertow: undertow: request smuggling via inconsistent header parsing8.7
- CVE-2025-12543Undertow-core: undertow http server fails to reject malformed host headers leading to potential cache poisoning and ssrf9.6
- CVE-2025-9784Undertow: undertow madeyoureset http/2 ddos vulnerability7.5
- CVE-2023-4639Undertow: cookie smuggling/spoofing7.4
- CVE-2023-1973Undertow: unrestricted request storage leads to memory exhaustion7.5
- CVE-2024-7885Undertow: improper state management in proxy protocol parsing causes information leakage7.5
- CVE-2024-5971Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticket7.5
- CVE-2024-6162Undertow: url-encoded request path information can be broken on ajp-listener7.5
- CVE-2024-1459Undertow: directory traversal vulnerability5.3
- CVE-2023-5379Undertow: ajp request closes connection exceeding maxrequestsize7.5
- CVE-2023-3223Undertow: outofmemoryerror due to @multipartconfig handling7.5
- CVE-2023-1108Undertow: infinite loop in sslconduit during close7.5
- CVE-2022-4492The undertow client is not checking the server identity presented by the server certificate in https connections. This is a compulsory step (at least it should be performed by default) in https and...7.5
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