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CVE

CVE-2026-35580

Emissary has GitHub Actions Shell Injection via Workflow Inputs
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CVE

CVE-2026-35580

Emissary has GitHub Actions Shell Injection via Workflow Inputs

Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, GitHub Actions workflow files contained shell injection points where user-controlled workflow_dispatch inputs were interpolated directly into shell commands via ${{ }} expression syntax. An attacker with repository write access could inject arbitrary shell commands, leading to repository poisoning and supply chain compromise affecting all downstream users. This vulnerability is fixed in 8.39.0.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35580.json, https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-3g6g-gq4r-xjm9, https://nvd.nist.gov/vuln/detail/CVE-2026-35580, https://github.com/NationalSecurityAgency/emissary/pull/1286, https://github.com/NationalSecurityAgency/emissary/pull/1288

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00566%
EPSS Percentile
0.44602%
Introduced Version
48d1d04277e19635441a31006eb052a690afd7eb
Fix Available
5e3d58513b4cc0362537c60f21983d62ddf40599

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