GHSA-6hcq-hmm3-jj3c CVE-2026-22735
Spring MVC and WebFlux has Server Sent Event stream corruption
- Severity
- 2.6 / 10
- Low · CVSS 3.1
- Exploit chance (EPSS)
- 0.12%
- Chance of exploitation in the next 30 days. Higher than 1.64% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-667 Improper Locking
- Fix
- Available
- 2 packages have a fixed version
Description
Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE). This issue affects Spring Foundation: from 7.0.0 through 7.0.5, from 6.2.0 through 6.2.16, from 6.1.0 through 6.1.25, from 5.3.0 through 5.3.46.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.springframework:spring-webflux | >= 7.0.0-M1, < 7.0.6 |
7.0.6 |
| org.springframework:spring-webflux | >= 6.2.0, < 6.2.17 |
6.2.17 |
| org.springframework:spring-webflux | >= 6.0.0, <= 6.1.21 |
No fix yet |
| org.springframework:spring-webflux | >= 5.3.0, <= 5.3.39 |
No fix yet |
| org.springframework:spring-webmvc | >= 7.0.0-M1, < 7.0.6 |
7.0.6 |
| org.springframework:spring-webmvc | >= 6.2.0, < 6.2.17 |
6.2.17 |
| org.springframework:spring-webmvc | >= 6.0.0, <= 6.1.21 |
No fix yet |
| org.springframework:spring-webmvc | >= 5.3.0, <= 5.3.39 |
No fix yet |
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 → 7.0.6
- maven
<dependency><groupId>org.springframework</groupId><artifactId>spring-webflux</artifactId><version>7.0.6</version></dependency>- gradle
implementation("org.springframework:spring-webflux:7.0.6")
org.springframework:spring-webmvc Maven → 7.0.6
- maven
<dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>7.0.6</version></dependency>- gradle
implementation("org.springframework:spring-webmvc:7.0.6")
Severity breakdown
CVSS 3.1 2.6
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Weakness
CWE-667: Improper Locking
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
How to prevent it
- Implementation: Use industry standard APIs to implement locking mechanism.
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-9qf2-26p9-2q2q Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints | Critical | 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-pc63-qcmh-9cmg Spring Framework Improper Path Limitation in XsltView | Critical | Also affects org.springframework:spring-webmvc |
| 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-957g-f97v-vppc Spring Framework Cross-site Scripting via JSP Form Tags | Medium | Also affects org.springframework:spring-webmvc |
| GHSA-3chg-m5w7-qfv5 Spring Framework Cross-site Scripting via JavaScriptUtils | Medium | Also affects org.springframework:spring-webmvc |
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