Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources

CVE-2026-22745 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks 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 serving static resources from the file system
  • the application is running on a Windows platform

When all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2026-04-29 12:33:07 UTC
Updated
2026-05-06 22:30:01 UTC
GitHub reviewed
2026-05-06 22:30:01 UTC
NVD published
2026-04-29

EPSS Score

Score Percentile
0.06% 17.54%

CVSS Scores

Base score Version Severity Vector
5.3 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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.

Identifiers

Type Value
GHSA GHSA-6p4f-wcwh-5vvm ↗
CVE CVE-2026-22745 ↗

CWEs

CWE id Name
CWE-400 Uncontrolled Resource Consumption

Affected packages (8)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven org.springframework:spring-webflux >= 7.0.0, <= 7.0.6 7.0.7 —
maven org.springframework:spring-webflux >= 6.2.0, <= 6.2.17 6.2.18 —
maven org.springframework:spring-webflux >= 6.1.0, <= 6.1.26 — —
maven org.springframework:spring-webflux <= 5.3.47 — —
maven org.springframework:spring-webmvc >= 7.0.0, <= 7.0.6 7.0.7 —
maven org.springframework:spring-webmvc >= 6.2.0, <= 6.2.17 6.2.18 —
maven org.springframework:spring-webmvc >= 6.1.0, <= 6.1.26 — —
maven org.springframework:spring-webmvc <= 5.3.47 — —

References

cvelogic Threat Intelligence