Vulnerability · Published Mar 17, 2026 · Assigned by GitHub_M
CVE-2026-25534Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames
Critical 9.1
In plain English
A critical-severity server-side request forgery in clouddriver-artifacts from io.spinnaker.clouddriver. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | io.spinnaker.clouddriver:clouddriver-artifacts | 2025.2.4 | GHSA-8r8j-gfhg-fw38 |
| Maven | io.spinnaker.clouddriver:clouddriver-artifacts | 2025.3.1 | GHSA-8r8j-gfhg-fw38 |
| Maven | io.spinnaker.clouddriver:clouddriver-artifacts | 2025.4.1 | GHSA-8r8j-gfhg-fw38 |
| Maven | io.spinnaker.orca:orca-core | 2025.2.4 | GHSA-8r8j-gfhg-fw38 |
| Maven | io.spinnaker.orca:orca-core | 2025.3.1 | GHSA-8r8j-gfhg-fw38 |
| Maven | io.spinnaker.orca:orca-core | 2025.4.1 | GHSA-8r8j-gfhg-fw38 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| io.spinnaker.clouddriver | clouddriver-artifacts | < 2025.2.4>= 2025.3.0, < 2025.3.1>= 2025.4.0, < 2025.4.1 |
| io.spinnaker.orca | orca-core | < 2025.2.4>= 2025.3.0, < 2025.3.1>= 2025.4.0, < 2025.4.1 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L