August 27, 2026-KB5122385 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 and Microsoft server operating system 24H2

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August 27, 2026-KB5122386 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

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CVE-2026-59313: Improper Neutralization of CRLF Sequences

Spring MVC applications using the functional web framework are vulnerable to stream corruption when using Server-Sent Events SSE. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49...

CVE-2026-59314: Improper Neutralization of CRLF Sequences in HTTP Headers

Applications that build a Content-Disposition header value from untrusted input may be vulnerable to HTTP response splitting when the input is a malicious file name. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spri...

PT-2026-82410

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...

CVE-2026-59282: Uncontrolled Resource Consumption

Spring Framework applications that use Spring's data binding infrastructure to apply user-supplied property paths onto a target object may be vulnerable to a Denial of Service DoS attack. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framewo...

CVE-2026-59281: Improper Neutralization of Input During Web Page Generation

Spring MVC and WebFlux applications that obtain a data-binding Errors instance with HTML escaping enabled and then render field errors using the no-argument Errors.getFieldErrors or Errors.getFieldError accessors are vulnerable to arbitrary HTML/JavaScript code injection, potentially resulting in...

CVE-2026-59283: Improper Control of Dynamically-Managed Code Resources

Applications that evaluate Spring Expression Language SpEL expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring...

CVE-2026-59280: Improper Limitation of a Pathname to a Restricted Directory

Applications using Spring Framework's FreeMarker integration may be vulnerable to a path traversal attack when a controller returns a view name derived from untrusted input and FreeMarker is configured to resolve templates through SpringTemplateLoader. Spring Framework 7.0.0 - 7.0.8 Spring...

CVE-2026-47883: URL Redirection to Untrusted Site

UrlHandlerFilter can be vulnerable to an open redirect when configured with very broadly matching patterns. The issue applies to the filter variants in both Spring MVC and Spring WebFlux. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19...

CVE-2026-47887: URL Redirection to Untrusted Site

A Spring MVC application that uses UrlFileNameViewController that is mapped with an end-of-path, and does not have a configured prefix is vulnerable to an open redirect. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30...

CVE-2026-47888: Missing Release of Memory after Effective Lifetime

A Spring RSocket application is exposed to a memory leak via a malformed SETUP frame. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.0.RELEASE - 5.2.25.RELEASE...

CVE-2026-47889: Sensitive Cookie with Improper SameSite Attribute

A WebFlux application running on the Jetty 12 Core reactive adapter serializes response cookies without the sameSite attribute. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19...

CVE-2026-47893: Generation of Error Message Containing Sensitive Information

A Spring WebFlux application that supports WebSocket connections may expose indirectly sensitive user information by including request headers in an exception reason. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30...

PT-2026-82402

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...

PT-2026-82401

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Description UrlHandlerFilter in both Spring MVC and Spring WebFlux is susceptible to an open redirect when configured with very broadly matching...

PT-2026-82718

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...

PT-2026-82409

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...

PT-2026-82545

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...

PT-2026-82405

Name of the Vulnerable Software and Affected Versions Spring Framework versions 7.0.0 through 7.0.8 Spring Framework versions 6.2.0 through 6.2.19 Spring Framework versions 6.1.0 through 6.1.28 Spring Framework versions 6.0.0 through 6.0.30 Spring Framework versions 5.3.0 through 5.3.49 Spring...