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9.1

Spinnaker clouddriver and orca allow malicious URLs with underscores

CVE-2026-25534 · published 7 months ago
Summary

Malicious URLs with underscores can bypass security checks in Spinnaker's clouddriver and orca components, allowing potential security breaches. This issue has been fixed in recent updates, and users should upgrade to the latest versions to prevent exploitation. In the meantime, consider disabling the affected components as a temporary workaround.

What to do
  • Update spinnaker io.spinnaker.orca:orca-core to version 2025.2.4.
  • Update spinnaker io.spinnaker.orca:orca-core to version 2025.3.1.
  • Update spinnaker io.spinnaker.orca:orca-core to version 2025.4.1.
  • Update spinnaker io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.2.4.
  • Update spinnaker io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.3.1.
  • Update spinnaker io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.4.1.
  • Update io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.3.1.
  • Update io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.4.1.
  • Update io.spinnaker.orca:orca-core to version 2025.3.1.
  • Update io.spinnaker.orca:orca-core to version 2025.4.1.
  • Update io.spinnaker.clouddriver:clouddriver-artifacts to version 2025.2.4.
  • Update io.spinnaker.orca:orca-core to version 2025.2.4.
Affected software
Ecosystem VendorProductAffected versions
maven spinnaker io.spinnaker.orca:orca-core < 2025.2.4
>= 2025.3.0, < 2025.3.1
>= 2025.4.0, < 2025.4.1
Fix: upgrade to 2025.2.4
maven spinnaker io.spinnaker.clouddriver:clouddriver-artifacts < 2025.2.4
>= 2025.3.0, < 2025.3.1
>= 2025.4.0, < 2025.4.1
Fix: upgrade to 2025.2.4
Maven spinnaker io.spinnaker.orca:orca-core >= 2025.1.6, < 2025.2.4
Fix: upgrade to 2025.2.4
Maven spinnaker io.spinnaker.clouddriver:clouddriver-artifacts >= 2025.1.6, < 2025.2.4
Fix: upgrade to 2025.2.4
maven – io.spinnaker.clouddriver:clouddriver-artifacts >= 2025.3.0, < 2025.3.1
>= 2025.4.0, < 2025.4.1
>= 2025.1.6, < 2025.2.4
Fix: upgrade to 2025.3.1
maven – io.spinnaker.orca:orca-core >= 2025.3.0, < 2025.3.1
>= 2025.4.0, < 2025.4.1
>= 2025.1.6, < 2025.2.4
Fix: upgrade to 2025.3.1
Original advisory text
Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames
### Impact
Spinnaker updated URL Validation logic on user input to provide sanitation on user inputted URLs for clouddriver. However, they missed that Java URL objects do not correctly handle underscores on parsing. This led to a bypass of the previous CVE (CVE-2025-61916) through the use of carefully crafted URLs. Note, Spinnaker found this not just in that CVE, but in the existing URL validations in Orca fromUrl expression handling. This CVE impacts BOTH artifacts as a result.

### Patches
This has been merged and will be available in versions 2025.4.1, 2025.3.1, 2025.2.4 and 2026.0.0.

### Workarounds
You can disable the various artifacts on this system to work around these limits.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
9.1 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-918Server-Side Request Forgery (SSRF)
Timeline
Published17 Mar 2026
Updated3 Nov 2026
First seen16 Mar 2026
Sources
GHSA-8r8j-gfhg-fw38 · GHSA
CVE-2026-25534 · NVD
CVE-2026-25534 · OSV
GHSA-8r8j-gfhg-fw38 · OSV
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