← Vulnerability feed

Vulnerability record · CVE-2025-1948 · published 8 May 2025

CVE-2025-1948: Eclipse jetty uncontrolled resource consumption vulnerability

Eclipse · Jetty

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.

7.5 CVSS 3.1 High EPSS 0.79% · top 43.0% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/jetty/jetty.project/security/advisories/GHSA-889j-63jv-qhr8 Vendor Advisory
https://gitlab.eclipse.org/security/cve-assignement/-/issues/56 Issue Tracking

Track CVE-2025-1948 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed9.8CVE-2017-7658Eclipse jetty http request smuggling vulnerabilityIn Eclipse Jetty Server, versions 9.2.x and older, 9.3.x (all non HTTP/1.x configurations), and 9.4.x (all HTTP/1.x configurations), when presented w…EPSS 19%9.8CVE-2017-7657Eclipse jetty http request smuggling vulnerabilityIn Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transf…EPSS 14%9.8CVE-2016-4800Eclipse jetty improper access control vulnerabilityThe path normalization mechanism in PathResource class in Eclipse Jetty 9.3.x before 9.3.9 on Windows allows remote attackers to bypass protected res…EPSS 6.5%9.4CVE-2019-17638Eclipse jetty vulnerabilityIn Eclipse Jetty, versions 9.4.27.v20200227 to 9.4.29.v20200521, in case of too large response headers, Jetty throws an exception to produce an HTTP …EPSS 11%9.1CVE-2026-2332Eclipse jetty http request smuggling vulnerabilityIn Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques out…EPSS 1.4%8.8CVE-2018-12538Eclipse jetty vulnerabilityIn Eclipse Jetty versions 9.4.0 through 9.4.8, when using the optional Jetty provided FileSessionDataStore for persistent storage of HttpSession deta…EPSS 2.6%8.7CVE-2026-10050Eclipse jetty vulnerabilityIn Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as bytes. This was done because the initial …EPSS 0.63%

Source: NIST National Vulnerability Database (record CVE-2025-1948), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.