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9.1
Spinnaker clouddriver and orca allow malicious URLs with underscores
GHSA-8r8j-gfhg-fw38
CVE-2026-25534
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.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 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.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| spinnaker | io.spinnaker.clouddriver:clouddriver-artifacts | <= 2025.2.4 | 2025.2.4 |
| spinnaker | io.spinnaker.clouddriver:clouddriver-artifacts | > 2025.3.0 , <= 2025.3.1 | 2025.3.1 |
| spinnaker | io.spinnaker.clouddriver:clouddriver-artifacts | > 2025.4.0 , <= 2025.4.1 | 2025.4.1 |
| spinnaker | io.spinnaker.orca:orca-core | <= 2025.2.4 | 2025.2.4 |
| spinnaker | io.spinnaker.orca:orca-core | > 2025.3.0 , <= 2025.3.1 | 2025.3.1 |
| spinnaker | io.spinnaker.orca:orca-core | > 2025.4.0 , <= 2025.4.1 | 2025.4.1 |
Original title
Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames
Original description
### 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.
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.
ghsa CVSS3.1
9.1
Vulnerability type
CWE-918
Server-Side Request Forgery (SSRF)
Published: 16 Mar 2026 · Updated: 16 Mar 2026 · First seen: 16 Mar 2026