CVE-2025-1948: Eclipse Jetty HTTP clients can increase memory allocation
Vulnerability summary
CVE-2025-1948 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in eclipse foundation jetty. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.9% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 3Timeline
- 08-05-2025PublishedVulnerability first disclosed.
- 08-05-2025Last modifiedVulnerability information updated.
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 metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.78%
Chance of exploitation in the next 30 days
Percentile
56%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.78% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard2 products
- neo4j-5.26< 5.26.6-r1
- neo4j-5.26-docker-publish< 5.26.6-r1
Ubuntu2 products
- jettyAll versions (No fix recorded)
- jetty9All versions (No fix recorded)
Debian1 product
- jetty12< 12.0.17-1
Eclipse1 product
- jetty≥ 12.0.0, < 12.0.17
Eclipse foundation1 product
- jetty≥ 12.0.0, ≤ 12.0.16
Org.eclipse.jetty.http21 product
- jetty-http2-common≥ 12.0.0, < 12.0.17
6 vendors · 8 products
References
10 links- github.com/jetty/jetty.project/security/advisories/GHSA-889j-63jv-qhr8REPORTAdvisoryWEBVendor Advisory
