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CVE-2026-25534 - Vulnerability Analysis

CriticalCVSS: 9.1

Last Updated: March 17, 2026

Spinnaker - Validation Bypass

Published: March 17, 2026Updated: March 17, 2026Remote Exploitable

Overview

Spinnaker < 2025.4.1, 2025.3.1, 2025.2.4, and 2026.0.0 contains a validation bypass caused by improper handling of underscores in Java URL parsing in clouddriver and Orca fromUrl expression, letting attackers bypass URL validation, exploit requires crafted URLs.

Severity & Score

Severity: Critical

CVSS Score: 9.1

Impact

Attackers can bypass URL validation, potentially leading to unauthorized actions or security bypasses in affected components.

Mitigation

Update to versions 2025.4.1, 2025.3.1, 2025.2.4, 2026.0.0 or later.

References

https://github.com/spinnaker/spinnaker/security/advisories/GHSA-8r8j-gfhg-fw38
https://github.com/spinnaker/spinnaker/security/advisories/GHSA-vrjc-q2fh-6x9h
https://github.com/spinnaker/spinnaker/commit/7c4737906239a958a468e843239c6785b03d0eda

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Details

CVE ID: CVE-2026-25534
Severity: Critical
CVSS Score: 9.1
Type: undefined
Status: new

CWE

CWE-918

CVSS Metrics

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