Resource exhaustion in Eclipse Jetty
CVE-2025-1948
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Eclipse Jetty
- Eclipse Foundation Jetty — versions 12.0.0
Weakness classification (CWE)
References
- gitlab.eclipse.org/security/cve-assignement/-/issues/56 (Issue Tracking)
- github.com/jetty/jetty.project/security/advisories/GHSA-889j-63jv-qhr8 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-1948?
- CVE-2025-1948 is a high-severity vulnerability in Eclipse Jetty, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-05-08.
- How severe is CVE-2025-1948?
- High severity. CVSS v3 base score is 7.5 out of 10.