CVE-2026-25534

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.

How to fix CVE-2026-25534

To remediate CVE-2026-25534, upgrade the affected package to a fixed version below.

• —upgrade to 2025.2.4 or later
• —upgrade to 2025.2.4 or later

Is CVE-2026-25534 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 2025.2.4
• from 0, < 2025.2.4

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-25534
• PATCHgithub.com/spinnaker/spinnaker
• WEBgithub.com/spinnaker/spinnaker/commit/7c4737906239a958a468e843239c6785b03d0eda
• WEBgithub.com/spinnaker/spinnaker/security/advisories/GHSA-8r8j-gfhg-fw38