GHSA-9qf2-26p9-2q2q CVE-2026-47892
Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints
Critical
Maven
- Severity
- 9.8 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 0.53%
- Chance of exploitation in the next 30 days. Higher than 44.78% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-863 Incorrect Authorization
- Fix
7.0.9- Upgrade org.springframework:spring-webflux to this version or later
Description
A WebFlux application using functional endpoints and deployed with DispatcherServlet may be vulnerable to a header predicate bypass in a pre-flight request. 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 5.2.5.RELEASE - 5.2.25.RELEASE
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.springframework:spring-webflux | >= 5.2.5.RELEASE, <= 5.2.25.RELEASE |
No fix yet |
| org.springframework:spring-webflux | >= 5.3.0, <= 5.3.49 |
No fix yet |
| org.springframework:spring-webflux | >= 6.0.0, <= 6.0.30 |
No fix yet |
| org.springframework:spring-webflux | >= 6.1.0, <= 6.1.28 |
No fix yet |
| org.springframework:spring-webflux | >= 6.2.0, <= 6.2.19 |
No fix yet |
| org.springframework:spring-webflux | >= 7.0.0, < 7.0.9 |
7.0.9 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.springframework:spring-webflux Maven → 7.0.9
- maven
<dependency><groupId>org.springframework</groupId><artifactId>spring-webflux</artifactId><version>7.0.9</version></dependency>- gradle
implementation("org.springframework:spring-webflux:7.0.9")
Severity breakdown
CVSS 3.1 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weakness
CWE-863: Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
How to prevent it
- Architecture and Design: Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
- Architecture and Design: Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
- Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
- Architecture and Design: For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page. One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
- System Configuration, Installation: Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-36p3-wjmg-h94x Remote Code Execution in Spring Framework | Critical Known exploited | Also affects org.springframework:spring-webflux |
| GHSA-j9f9-w8pj-32f8 Spring Framework Server Sent Event stream corruption while rendering fragments | Critical | Also affects org.springframework:spring-webflux |
| GHSA-cjpg-rgq5-fr37 Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux | Medium | Also affects org.springframework:spring-webflux |
| GHSA-vqgp-pf68-6947 Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL | Medium | Also affects org.springframework:spring-webflux |
| GHSA-h3qp-gqrc-q736 Spring Framework Open Redirect in Spring MVC and WebFlux | Medium | Also affects org.springframework:spring-webflux |
| GHSA-72pg-x5f8-j25j Spring Framework Path Traversal via Versioned Static Resources in Spring MVC and WebFlux | Medium | Also affects org.springframework:spring-webflux |
| GHSA-x23c-287f-qqv5 Spring Framework Denial of Service via Versioned Resources in Spring MVC and WebFlux | High | Also affects org.springframework:spring-webflux |
| GHSA-mq64-j8f9-9gcj Spring Framework Information Disclosure via Static Resource Cache in Spring MVC and WebFlux | Medium | Also affects org.springframework:spring-webflux |
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