What’s Vulnerable › Vulnerabilities

CVE-2026-22745: CVE-2026-22745 : Denial of service in static resource handling on Windows platforms

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-29 · updated 2026-10-26
• Weakness: CWE-400

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.

Affected products

• Spring Framework: before 5.3.48; from 6.1.0 before 6.1.27; from 6.2.0 before 6.2.18; from 7.0.0 before 7.0.7 — fixed in 5.3.48, 6.1.27, 6.2.18, 7.0.7
• Maven Org.Springframework:Spring-Webflux: from 7.0.0 before 7.0.7; from 6.2.0 before 6.2.18; from 6.1.0 through 6.1.26; through 5.3.47; 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5 (+149) — fixed in 7.0.7, 6.2.18
• Maven Org.Springframework:Spring-Webmvc: from 7.0.0 before 7.0.7; from 6.2.0 before 6.2.18; from 6.1.0 through 6.1.26; through 5.3.47; 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.0.5 (+291) — fixed in 7.0.7, 6.2.18
• Spring Framework: from 7.0.0 before 7.0.7; from 6.2.0 before 6.2.18; from 6.1.0 before 6.1.27; from 5.3.0 before 5.3.48 — fixed in 7.0.7, 6.2.18, 6.1.27, 5.3.48

How to fix

Upgrade to a fixed version: Spring Framework 5.3.48, 6.1.27, 6.2.18, 7.0.7; Maven Org.Springframework:Spring-Webflux 7.0.7, 6.2.18; Maven Org.Springframework:Spring-Webmvc 7.0.7, 6.2.18; Spring Framework 7.0.7, 6.2.18, 6.1.27, 5.3.48. Check the vendor advisory for mitigations.

References

• https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L&version=3.1
• https://spring.io/security/cve-2026-22745

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