Skip to content
Fencer Vulns
low 2.6

CVE-2026-22735 json

Server Sent Event stream corruption

published 2026-03-19 7 mo ago modified 2026-09-10 1 mo ago also GHSA-6hcq-hmm3-jj3c , EUVD-2026-13404

cvss
2.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.springframework:spring-webmvc 6.2.17, 7.0.6
  • maven org.springframework:spring-webflux 6.2.17, 7.0.6
  • vmware spring_framework 5.3.47, 6.1.26, 6.2.17, 7.0.6

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-22735 updated cvss 2.6

org.springframework/spring-webmvc: org.springframework/spring-webflux: Spring MVC and WebFlux: Stream corruption vulnerability when using Server-Sent Events

  • Red Hat AMQ Broker 7 spring-webmvc Red Hat build of Apache Camel - HawtIO 4 spring-webmvc, spring-webflux Red Hat build of Apache Camel for Spring Boot 4 spring-webmvc Red Hat build of OptaPlanner 8 spring-webmvc Red Hat Data Grid 8 spring-webmvc Red Hat Enterprise Linux 8 log4j, resteasy, log4j-jcl, log4j-web, log4j-slf4j, resteasy-javadoc
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 log4j, resteasy, log4j-jcl, log4j-slf4j, pki-resteasy-core, pki-resteasy-client, +2 more
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat Fuse 7 spring-webmvc, spring-webflux Red Hat JBoss Enterprise Application Platform 7 spring-webmvc, spring-webflux Red Hat JBoss Enterprise Application Platform 8 spring-webmvc, spring-webflux Red Hat JBoss Enterprise Application Platform Expansion Pack spring-webmvc, spring-webflux Red Hat OpenShift Dev Spaces devspaces/openvsx-rhel9, devspaces/pluginregistry-rhel9 Red Hat Process Automation 7 spring-webmvc
    +1 more products
    Red Hat Single Sign-On 7 spring-webmvc
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.6 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
GitHub 3.1 2.6 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.springframework:spring-webmvc
>=7.0.0-M1, <7.0.6
>=6.2.0, <6.2.17
>=6.0.0, <=6.1.21
>=5.3.0, <=5.3.39
7.0.6
6.2.17
maven org.springframework:spring-webflux
>=7.0.0-M1, <7.0.6
>=6.2.0, <6.2.17
>=6.0.0, <=6.1.21
>=5.3.0, <=5.3.39
7.0.6
6.2.17

Affected products

  • Spring Spring Foundation

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.