CVE-2026-41847— Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL
Quick assessment
Affected
Spring Spring Framework
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Spring Framework是Spring开源的一款应用开发框架。 Spring Framework 5.3.0至5.3.48版本存在访问控制错误漏洞，该漏洞源于使用Kotlin Router DSL时可能导致安全绕过。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Spring | Spring Framework | 5.3.0< 5.3.49 |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-41847
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL
Source: CVE Program / CVE List V5
Vulnerability Description
Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL.
Affected versions:
Spring Framework 5.3.0 through 5.3.48.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Spring Framework 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Spring Framework是Spring开源的一款应用开发框架。 Spring Framework 5.3.0至5.3.48版本存在访问控制错误漏洞，该漏洞源于使用Kotlin Router DSL时可能导致安全绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Spring | Spring Framework | 5.3.0 ~ 5.3.49 | - |
|
II. Public POCs for CVE-2026-41847
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-41847
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-41847 (1)
Same Patch Batch · Spring · 2026-06-09 · 51 CVEs total
| CVE-2026-41717 | 8.1 HIGH | Spring Data MongoDB - SpEL Expression Injection via Annotated Query Parameter Binding |
| CVE-2026-41732 | 8.1 HIGH | In Spring for Apache Pulsar, overly broad trusted-package matching in header mapper expose |
| CVE-2026-41855 | 8.1 HIGH | Spring Framework Unsafe Deserialization via Jackson JMS Converters |
| CVE-2026-41729 | 8.1 HIGH | Spring Data REST SpEL Injection via Map Key in JSON Patch |
| CVE-2026-41731 | 8.1 HIGH | In Spring for Apache Kafka, overly broad trusted-package matching in header mappers expose |
| CVE-2026-41003 | 7.6 HIGH | Unencoded HTML Outputs in Spring Security May Allow Cross-Site Scripting |
| CVE-2026-41728 | 7.5 HIGH | Spring Data REST JSON Patch bypasses Jackson read-only property protection on nested objec |
| CVE-2026-40983 | 7.5 HIGH | Micrometer gRPC server instrumentation DoS vulnerability |
| CVE-2026-40984 | 7.5 HIGH | Micrometer HTTP server instrumentations DoS vulnerability |
| CVE-2026-40988 | 7.5 HIGH | Unbounded DEFLATE Inflation in SAML 2.0 Service Provider |
| CVE-2026-41850 | 7.5 HIGH | Spring Framework Algorithmic Denial of Service via SpEL Expressions |
| CVE-2026-41716 | 7.5 HIGH | Spring Data web support unbounded negative-result cache keyed on attacker-supplied propert |
| CVE-2026-41695 | 7.5 HIGH | Denial of Service in Spring Data Commons Property Path Resolution |
| CVE-2026-41849 | 7.5 HIGH | Spring Framework Denial of Service via Integer Overflow in SpEL Expressions |
| CVE-2026-41007 | 7.5 HIGH | Spring HATEOAS heap exhaustion through unbounded internal caching |
| CVE-2026-41006 | 7.5 HIGH | Spring HATEOAS Collection+JSON/UBER deserializers do not honor Jackson configuration |
| CVE-2026-41842 | 7.5 HIGH | Spring Framework Denial of Service via Versioned Resources in Spring MVC and WebFlux |
| CVE-2026-41720 | 7.4 HIGH | Authentication Bypass with Empty Password in Spring LDAP |
| CVE-2026-40993 | 7.3 HIGH | Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Databa |
| CVE-2026-41845 | 7.1 HIGH | Spring Framework Cross-site Scripting via JavaScriptUtils |
Showing top 20 of 51 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Spring Framework
-
CVE-2026-59314
Spring Framework response splitting in ContentDisposition -
CVE-2026-59313
Server Sent Event stream corruption in Spring MVC functional -
CVE-2026-59283
Spring Framework Safety Guard Bypass via SpEL Expression Com -
CVE-2026-59282
Spring Framework Denial of Service via Unbounded List Growth -
CVE-2026-59281
Spring Framework Cross-site Scripting via EscapedErrors
Same vendor: Spring
-
CVE-2026-59324
fluxTransform shared RequestMessageHolder causes cross-messa -
CVE-2026-59322
EmbeddedHeadersJsonMessageMapper default gives wire peer ful -
CVE-2026-59321
Shared JSR-223 ScriptEngine evaluated concurrently without T -
CVE-2026-59320
In Spring AMQP the link credit never replenished on listener -
CVE-2026-59319
RediSearch Tag Injection in RedisChatMemoryRepository Allows
Same weakness: CWE-284
-
CVE-2026-77252
MCP Atlassian: JIRA_PROJECTS_FILTER and CONFLUENCE_SPACES_FI -
CVE-2026-95624
Tauri framework v2 malicious downgrade via allow_downgrades -
CVE-2026-83602
Netdata: Unauthenticated remote PUT to /api/v3/settings bypa -
CVE-2026-76804
Nuclei: Local File Read via Workflow File-Protocol Gate Bypa -
CVE-2026-76803
Nuclei: Local File Read via MySQL Client Sandbox Bypass
V. Comments for CVE-2026-41847
No comments yet