Static resource cache poisoning in Spring MVC and WebFlux

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Summary

CVECVE-2026-22741
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-29 12:16:18 UTC
Updated2026-05-04 14:51:05 UTC
DescriptionSpring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources. More precisely, an application can be vulnerable when all the following are true: * the application is using Spring MVC or Spring WebFlux * the application is configuring the  resource chain support https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-config/static-resources.html#page-title  with caching enabled * the application adds support for encoded resources resolution * the resource cache must be empty when the attacker has access to the application When all the conditions above are met, the attacker can send malicious requests and poison the resource cache with resources using the wrong encoding. This can cause a denial of service by breaking the front-end application for clients.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS: 0.000470000 probability, percentile 0.142400000 (date 2026-05-03)

Problem Types: CWE-524 | CWE-524 CWE-524 Information Exposure Through Caching

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
3.1CNACVSS3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Vmware Spring Framework All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA VMware Spring Framework affected 7.0.0 7.0.7 oss Not specified
CNA VMware Spring Framework affected 6.2.0 6.2.18 oss Not specified
CNA VMware Spring Framework affected 6.1.0 6.1.27 commercial Not specified
CNA VMware Spring Framework affected 5.3.0 5.3.48 commercial Not specified

References

ReferenceSourceLinkTags
nvd.nist.gov/vuln-metrics/cvss/v3-calculator [email protected] nvd.nist.gov US Government Resource
spring.io/security/cve-2026-22741 [email protected] spring.io Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Yuki Matsuhashi . (en)

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