CVE-2026-44795: linuxfoundation spinnaker Unsafe Reflection
Vulnerability summary
CVE-2026-44795 is a high (CVSS 8.8) Unsafe Reflection vulnerability in linuxfoundation spinnaker. EPSS estimates a 1.01% chance of exploitation in the next 30 days, higher than 62.6% of scored vulnerabilities.
Timeline
- 10-07-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3, unsafe YAML processing bypasses safe deserialization when using CloudFormation deployments or CloudFoundry baking. The use of a non-safe constructor allows arbitrary loading of Java classes, leading to remote code execution. This issue is fixed in versions 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · MavenEcosystem advisory · calculated8.5HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:NDiffers
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.01%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.01% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.
- CWE-502Deserialization of Untrusted DataThe product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected systems
Io.spinnaker.orca1 product
- orca-core< 2025.3.3 | ≥ 2025.4.0, < 2025.4.4 | ≥ 2026.0.0, < 2026.0.3
Io.spinnaker.rosco1 product
- rosco-core< 2025.3.3 | ≥ 2025.4.0, < 2025.4.4 | ≥ 2026.0.0, < 2026.0.3
Linuxfoundation1 product
- spinnaker< 2025.3.3 | ≥ 2025.4.0, < 2025.4.4 | ≥ 2026.0.0, < 2026.0.3
Spinnaker1 product
- spinnaker≥ 2025.4.0, < 2025.4.4 | ≥ 2026.0.0, < 2026.0.3 | < 2025.3.3
4 vendors · 4 products
References
6 links- github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8X Refsource CONFIRMWEBThird Party Advisory
- github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5X Refsource MISCWEBPatch
- github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627X Refsource MISCWEBPatch
- github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5eX Refsource MISCWEBPatch
