TI-2026-83201 Aliases CVE-2026-119289

Spoofable workflow run matching in Zuke githubWorkflow gate

LOW 30CWE-345Published 2026-10-30 · Updated 2026-11-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

Zuke before 1.10.0 is a code-first build automation system for Deno, and its @zuke/gh githubWorkflow gate matches dispatched workflow runs only by a display-title marker. When the external workflow repository grants workflow_dispatch to a party the releasing repository does not fully trust, an attacker can copy that marker, dispatch a run, and have the gate adopt its conclusion without checking the event, ref, or creation window (CWE-345). A passing run can authorize an unvalidated release, and a failed or cancelled run can block a valid one.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.10.0, the @zuke/gh githubWorkflow(...) gate correlates a dispatched workflow run using only a display-title marker that is visible in the workflow run list and can be copied by another dispatcher. In configurations where the external workflow repository grants workflow_dispatch permission to a party not equally trusted by the releasing repository, an attacker can dispatch a run with the marker and cause the gate to adopt its conclusion without verifying the event, ref, or creation window. A passing substituted run can authorize an unvalidated release, while a failed or cancelled run can block a valid release, and the persisted adopted run ID preserves the substitution across build resume. This issue is fixed in version 1.10.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00176 7th percentileScored 2026-11-07

Fix Fixed zuke (zuke-build): 1.10.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
zuke-build	zuke	before 1.10.0	1.10.0	Patch available	CNA

zuke Vendorzuke-build Affected before 1.10.0 Fixed in 1.10.0 Patch available CNA

Remediation

Upgrade Zuke to version 1.10.0, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Fix · CNA zuke (zuke-build) Fixed in 1.10.0

Timeline

2026-10-30 Threatist record created from CVE-2026-119289
2026-11-01 Priority changed: MEDIUM → LOW
2026-11-06 CISA SSVC decision points changed

References

Other 4

TI-2026-83202 Zuke writes resolved secrets in cleartext to GitHub step summaries CVSS 3.1HIGH 7.5
TI-2026-83198 Zuke: Command-form registry descriptors bypass the MCP launch policy CVSS 3.1HIGH 8.0
TI-2026-83199 Argument injection in Zuke on Windows via cmd.exe batch shims CVSS 3.1HIGH 7.0
TI-2026-83203 Symlink following in zuke setup and import allows outside writes CVSS 3.1MEDIUM 5.5

Sources

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