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CVE-2026-44795

Spinnaker: Non-safe yaml deserialization allowing RCE when using specific types

HIGH
8.8
CVSS Score
Published: July 10, 2026 at 09:49 PM UTC
Updated: July 21, 2026 at 02:19 PM UTC
2 products affected across 2 vendorsSpinnakerSpinnaker

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spinnaker· Linuxfoundation
95%
v < 2025.3.32025.4.0 ≤ v < 2025.4.42026.0.0 ≤ v < 2026.0.3
Affected range stops below 2025.3.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2025.4.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.0.3, so it looks safe — our inference, not a vendor statement
Spinnaker· Spinnaker
60%
v < 2025.3.3v < 2025.4.4v < 2026.0.3
Affected range stops below 2025.3.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2025.4.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.0.3, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMThird Party Advisory
Source: cverecord
https://github.com/spinnaker/spinnaker/security/advisories/GHSA-c8q4-9h32-2ww8
x_refsource_MISCPatch
Source: cverecord
https://github.com/spinnaker/spinnaker/commit/4cbe1d5fea9df573aadfd8b093fb4b594b354ee5
x_refsource_MISCPatch
Source: cverecord
https://github.com/spinnaker/spinnaker/commit/e57c0db4584b398473a7bbb19402ce6c1e89b627
x_refsource_MISCPatch
Source: cverecord
https://github.com/spinnaker/spinnaker/commit/f69d7b534d068ed74d0d3a1fbf17e2c945d36e5e

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-470CWE-502

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