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CVE-2026-59284

MEDIUM 6.6

Published 2026-08-27 · Last modified 2026-08-28

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

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 26th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

6.6CVSS 3.1 · MEDIUM

  • ConfidentialityNone
  • IntegrityHigh
  • AvailabilityLow

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires an admin / high-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-59284/poc.jsonMachine-readable PoC index for this CVE (for automation).

Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-59284/poc.json

Affected

Vendors Spring

Products Spring Cloud Commons

Weakness (CWE)

  • CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L

All CVSS metrics

  • MEDIUM 6.6 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L
  • HIGH 7.6 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L

References

Technical & other

Sources: NVD · CVE.org · EPSS