CVE-2026-22741 | Static resource cache poisoning in Spring MVC and WebFlux

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.

Published: 2026-04-29 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-22741 is rated Low Risk (17.6/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.24%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-22741

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.24% +0.17%
2 2026-05-05 0.05% 0.07% +0.02%
3 2026-04-30 — 0.05% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-22741

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.1 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.6 1.4 [email protected]

Weakness enumeration for CVE-2026-22741

GitHub Security Advisory for CVE-2026-22741

GHSA-wg35-8jpf-2xv3 · Severity: low · Ecosystem: maven — Spring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources.

OS Trackers for CVE-2026-22741

vendor priority summary link
debian unimportant CVE-2026-22741 unimportant priority: Debian including 1 source packages (libspring-java), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2026-22741
ubuntu medium CVE-2026-22741 medium priority: Ubuntu including 1 source packages (libspring-java), 9 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): needs-triage 9. https://ubuntu.com/security/CVE-2026-22741

Affected software / configurations for CVE-2026-22741

Vendor Product Version Raw CPE
vmware spring_framework < 5.3.48 cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
vmware spring_framework >= 6.1.0, < 6.1.27 cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
vmware spring_framework >= 6.2.0, < 6.2.18 cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*
vmware spring_framework >= 7.0.0, < 7.0.7 cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*

References for CVE-2026-22741

cvelogic Threat Intelligence