SSRF in Io.spinnaker.clouddriver Clouddriver-Artifacts
CVE-2026-25534
### 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.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.002 (16.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L.
Affected products
- Io.spinnaker.clouddriver Clouddriver-artifacts — versions < 2025.2.4, >= 2025.3.0, < 2025.3.1, >= 2025.4.0, < 2025.4.1
- Io.spinnaker.orca Orca-core — versions < 2025.2.4, >= 2025.3.0, < 2025.3.1, >= 2025.4.0, < 2025.4.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-25534?
- CVE-2026-25534 is a critical-severity vulnerability in Io.spinnaker.clouddriver Clouddriver-Artifacts, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.1/10. Published 2026-03-17.
- How severe is CVE-2026-25534?
- Critical severity. CVSS v3 base score is 9.1 out of 10.