Vulnerability · Published May 8, 2025 · Assigned by eclipse
CVE-2025-1948Eclipse Jetty HTTP clients can increase memory allocation
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Jetty from Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In Eclipse Jetty versions 12.0.0 to 12.0.16 included, an HTTP/2 client can specify a very large value for the HTTP/2 settings parameter SETTINGS_MAX_HEADER_LIST_SIZE. The Jetty HTTP/2 server does not perform validation on this setting, and tries to allocate a ByteBuffer of the specified capacity to encode HTTP responses, likely resulting in OutOfMemoryError being thrown, or even the JVM process exiting.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | jetty12 | 12.0.17-1 | DEBIAN-CVE-2025-1948 |
| Debian:14 | jetty12 | 12.0.17-1 | DEBIAN-CVE-2025-1948 |
| Maven | org.eclipse.jetty.http2:jetty-http2-common | 12.0.17 | GHSA-889j-63jv-qhr8 |
| Ubuntu:22.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2025-1948 |
| Ubuntu:24.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2025-1948 |
| Ubuntu:25.10 | jetty9 | no fix listed | UBUNTU-CVE-2025-1948 |
| Ubuntu:26.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2025-1948 |
| Ubuntu:26.10 | jetty9 | no fix listed | UBUNTU-CVE-2025-1948 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | Jetty | 12.0.0 – through 12.0.16 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H