CVE-2026-22735 Security Details

CVE ID

CVE-2026-22735

CWE

CWE-667

CVE Description

Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE). This issue affects Spring Foundation: from 7.0.0 through 7.0.5, from 6.2.0 through 6.2.16, from 6.1.0 through 6.1.25, from 5.3.0 through 5.3.46.

Published

Mar 20, 2026

CVSS Score & Severity

2.1Low

CVSS Vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.092%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/springframework/http/codec/ServerSentEventHttpMessageWriter.encode(Lorg/reactivestreams/Publisher;Lorg/springframework/core/ResolvableType;Lorg/springframework/http/MediaType;Lorg/springframework/core/io/buffer/DataBufferFactory;Ljava/util/Map;)Lreactor/core/publisher/Flux;

JVM

org/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilderImpl.comment(Ljava/lang/String;)Lorg/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilder;

JVMVulnerable params: 0

org/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilderImpl.data(Ljava/lang/Object;Lorg/springframework/http/MediaType;)Lorg/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilder;

JVMVulnerable params: 0

org/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilderImpl.id(Ljava/lang/String;)Lorg/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilder;

JVMVulnerable params: 0

org/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilderImpl.name(Ljava/lang/String;)Lorg/springframework/web/servlet/mvc/method/annotation/SseEmitter$SseEventBuilder;

JVMVulnerable params: 0

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT