CVE-2025-5115

Description

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

How to fix CVE-2025-5115

To remediate CVE-2025-5115, upgrade the affected package to a fixed version below.

—upgrade to 12.0.17-3.1~deb13u1 or later
—upgrade to 12.0.17-3.1~deb13u1 or later
—upgrade to 9.4.57-1.1~deb12u1 or later
—upgrade to 9.4.57-0+deb11u3 or later
—upgrade to 9.4.57-0+deb11u3 or later
—upgrade to 9.4.58 or later
—upgrade to 12.0.25 or later

Is CVE-2025-5115 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

from 0, < 12.0.17-3.1~deb13u1
from 0, < 12.0.17-3.1~deb13u1
from 0, < 9.4.57-1.1~deb12u1
from 0, < 9.4.57-0+deb11u3
from 0, < 9.4.57-0+deb11u3
>= 9.3.0, < 9.4.58
>= 12.0.0, < 12.0.25

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	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
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H