Unauthenticated code execution via unsafe data binding
Published Apr 1, 2022 · Updated Oct 21, 2025
Code injection in Spring Framework 5.3.0 through 5.3.17 and 5.2.19.RELEASE and earlier allows remote attackers to execute code. Request-parameter data binding exposes ClassLoader and ProtectionDomain property paths, allowing crafted fields to reach container internals. The reported path requires JDK 9 or later, spring-webmvc or spring-webflux, and a traditional WAR on a vulnerable servlet container; default executable JAR deployments are not exposed.
Summary
What happened
Code injection in Spring Framework 5.3.0 through 5.3.17 and 5.2.19.RELEASE and earlier allows remote attackers to execute code. Request-parameter data binding exposes ClassLoader and ProtectionDomain property paths, allowing crafted fields to reach container internals. The reported path requires JDK 9 or later, spring-webmvc or spring-webflux, and a traditional WAR on a vulnerable servlet container; default executable JAR deployments are not exposed.
The record
- CVE
- CVE-2022-22965
- Published
- Apr 1, 2022
- Updated
- Oct 21, 2025
- Vendor
- Spring
- Product
- Spring Framework
- Classifications
- CWE-94, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 1, 2022CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Spring Framework versions 5.3.X prior to 5.3.18+, 5.2.x prior to 5.2.20+ and all old and unsupported versions
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
View daily counts
| Reporting day | Unique IPs |
|---|---|
| Sep 10, 2026 | 7 |
| Sep 11, 2026 | 2 |
| Sep 12, 2026 | 3 |
| Sep 13, 2026 | 5 |
| Sep 14, 2026 | 5 |
| Sep 15, 2026 | 1 |
| Sep 16, 2026 | Unavailable |
Weakness, pattern, technique
Public exploit references
- Spring4Shell PoC application and exploitfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- CISA Known Exploited Vulnerabilities Catalog listingknown exploited catalog
- Observed SpringShell exploit attemptsreported exploitation
Technologies
Your stack
See the directory against your own environment.
Your stack
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