CVE-2025-5115 | MadeYouReset HTTP/2 vulnerability

In Eclipse Jetty, versions <=9.4.57, <=10.0.25, <=11.0.25, <=12.0.21, <=12.1.0.alpha2, an HTTP/2 client may trigger the server to send RST_STREAM frames, for example by sending frames that are malformed or that should not be sent in a particular stream state, therefore forcing the server to consume resources such as CPU and memory. For example, a client can open a stream and then send WINDOW_UPDATE frames with window size increment of 0, which is illegal. Per specification https://www.rfc-editor.org/rfc/rfc9113.html#name-window_update , the server should send a RST_STREAM frame. The client can now open another stream and send another bad WINDOW_UPDATE, therefore causing the server to consume more resources than necessary, as this case does not exceed the max number of concurrent streams, yet the client is able to create an enormous amount of streams in a short period of time. The attack can be performed with other conditions (for example, a DATA frame for a closed stream) that cause the server to send a RST_STREAM frame. Links: * https://github.com/jetty/jetty.project/security/advisories/GHSA-mmxm-8w33-wc4h

Published: 2025-08-20 Last update: 2026-01-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-5115 is rated Moderate Risk (55.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.57%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-5115

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-06 0.47% 0.57% +0.10%
2 2026-05-13 0.18% 0.47% +0.30%
3 2026-05-06 — 0.18% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-5115

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.7 4.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:H)
High availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-5115

GitHub Security Advisory for CVE-2025-5115

GHSA-mmxm-8w33-wc4h · Severity: high · Ecosystem: maven — Eclipse Jetty affected by MadeYouReset HTTP/2 vulnerability

OS Trackers for CVE-2025-5115

vendor priority summary link
debian not yet assigned CVE-2025-5115 not yet assigned priority: Debian including 2 source packages (jetty12, jetty9), 8 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 8. https://security-tracker.debian.org/tracker/CVE-2025-5115
redhat high — https://access.redhat.com/security/cve/CVE-2025-5115
suse high CVE-2025-5115 severity important: SUSE including 68 source package names (jetty-annotations-9.4.58-1.1, jetty-annotations-9.4.58-150200.3.34.1, …), 197 product×package rows across 21 product lines (Image server-image, SUSE Enterprise Storage 7.1, … (21 product lines)): Fixed 197. https://www.suse.com/security/cve/CVE-2025-5115/
ubuntu medium CVE-2025-5115 medium priority: Ubuntu including 2 source packages (jetty, jetty9), 15 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): needs-triage 10, DNE 4, ignored 1. https://ubuntu.com/security/CVE-2025-5115

Affected software / configurations for CVE-2025-5115

Vendor Product Version Raw CPE
eclipse jetty >= 9.3.0, <= 9.4.57 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty >= 10.0.0, <= 10.0.25 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty >= 11.0.0, <= 11.0.25 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty >= 12.0.0, <= 12.0.21 cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
eclipse jetty 12.1.0 cpe:2.3:a:eclipse:jetty:12.1.0:alpha0:*:*:*:*:*:*
eclipse jetty 12.1.0 cpe:2.3:a:eclipse:jetty:12.1.0:alpha1:*:*:*:*:*:*
eclipse jetty 12.1.0 cpe:2.3:a:eclipse:jetty:12.1.0:alpha2:*:*:*:*:*:*

References for CVE-2025-5115

URL Tags
https://github.com/jetty/jetty.project/pull/13449 Issue Tracking
https://github.com/jetty/jetty.project/releases/tag/jetty-10.0.26 Release Notes
https://github.com/jetty/jetty.project/releases/tag/jetty-11.0.26 Release Notes
https://github.com/jetty/jetty.project/releases/tag/jetty-12.0.25 Release Notes
https://github.com/jetty/jetty.project/releases/tag/jetty-12.1.0 Release Notes
https://github.com/jetty/jetty.project/releases/tag/jetty-9.4.58.v20250814 Release Notes
https://github.com/jetty/jetty.project/security/advisories/GHSA-mmxm-8w33-wc4h Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/08/20/4 Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/09/17/1 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00014.html Issue Tracking Mailing List
https://www.kb.cert.org/vuls/id/767506 Third Party Advisory
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