Spinnaker clouddriver and orca URL validation bypass via underscores in hostnames

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Summary

CVECVE-2026-25534
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-17 18:16:15 UTC
Updated2026-04-16 14:46:24 UTC
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.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

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

EPSS: 0.000460000 probability, percentile 0.140390000 (date 2026-04-16)

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
3.1CNADECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Io.spinnaker.clouddriver Clouddriver-artifacts affected < 2025.2.4 Not specified
CNA Io.spinnaker.clouddriver Clouddriver-artifacts affected >= 2025.3.0, < 2025.3.1 Not specified
CNA Io.spinnaker.clouddriver Clouddriver-artifacts affected >= 2025.4.0, < 2025.4.1 Not specified
CNA Io.spinnaker.orca Orca-core affected < 2025.2.4 Not specified
CNA Io.spinnaker.orca Orca-core affected >= 2025.3.0, < 2025.3.1 Not specified
CNA Io.spinnaker.orca Orca-core affected >= 2025.4.0, < 2025.4.1 Not specified

References

ReferenceSourceLinkTags
github.com/spinnaker/spinnaker/security/advisories/GHSA-8r8j-gfhg-fw38 [email protected] github.com
github.com/spinnaker/spinnaker/security/advisories/GHSA-vrjc-q2fh-6x9h [email protected] github.com
github.com/spinnaker/spinnaker/commit/7c4737906239a958a468e843239c6785b0... [email protected] github.com
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