Description
In Eclipse Jetty, across various versions of `jetty-server`, and `jetty-proxy`, the host whitelist/blacklist is case-sensitive, and would allow hosts through that only differ by case.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Eclipse Foundation | org.eclipse.jetty:jetty-server | 12.1.0 – ≤ 12.1.11, 12.0.0 – ≤ 12.0.38 | — |
| Eclipse Foundation | org.eclipse.jetty:jetty-proxy | 11.0.0 – ≤ 11.0.32, 10.0.0 – ≤ 10.0.32, 9.0.0 – ≤ 9.4.64 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | jetty12 | 12.0.39-1 | — |
| Debian 14 | jetty9 | No fix yet | — |
| Debian 13 | jetty9 +1 | No fix yet | — |
| Debian 12 | jetty9 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | jetty9 +1 | No fix yet | — |
| Ubuntu 26.04 LTS | jetty9 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | jetty9 | No fix yet | — |
| Ubuntu 22.04 LTS | jetty9 | No fix yet | — |
| Ubuntu 20.04 LTS | jetty9 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | jetty9 | No fix yet | — |
| Ubuntu 16.04 LTS | jetty9 | No fix yet | — |
Advisories 1
- WID-SEC-2026-3992 Eclipse Jetty: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 5, 2026