Spring 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.

The version of Spring Framework installed on the remote host is 5.3.x prior to 5.3.48, 6.1.x prior to 6.1.27, 6.2.x prior to 6.2.18, or 7.0.x prior to 7.0.7. It is, therefore, affected by multiple vulnerabilities:

  - A WebFlux server application that processes multipart requests creates temp files for parts larger than 10K. Under     some circumstances, temp files may remain not deleted after the request is fully processed, allowing an attacker to     consume available disk space. (CVE-2026-22740)

  - Spring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources with caching     and encoded resources resolution enabled. An attacker can poison the resource cache with resources using the wrong     encoding, causing a denial of service. (CVE-2026-22741)

  - Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources from     the file system on Windows platforms. An attacker can send malicious requests that are slow to resolve and that can     keep HTTP connections in use. (CVE-2026-22745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Spring 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.
    (CVE-2026-22741)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Spring 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.
    (CVE-2026-22741)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
314917	Spring Framework 5.3.x < 5.3.48 / 6.1.x < 6.1.27 / 6.2.x < 6.2.18 / 7.0.x < 7.0.7 Multiple DoS	Nessus	Misc.	medium
441392	SCA: security update for org.springframework:spring-webflux, org.springframework:spring-webmvc (GHSA-wg35-8jpf-2xv3)	Tenable Cloud Security	SCA Checks	low
441392	SCA: security update for org.springframework:spring-webflux, org.springframework:spring-webmvc (GHSA-wg35-8jpf-2xv3)	Tenable Self-Hosted Container Security	SCA Checks	low
312040	Linux Distros Unpatched Vulnerability : CVE-2026-22741	Nessus	Misc.	low

Detections

Analytics

CVE-2026-22741

low

Tenable Plugins

medium

low

low

low