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CVE-2026-35580

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:26b8e6efdb855c21233cdf02a70078517ca2f07a8cb0d952a0c0093c45efe4f3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"emissary","vendor":"NationalSecurityAgency","versions":[{"status":"affected","version":"< 8.39.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-77","description":"CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/NationalSecurityAgency/emissary/pull/1286","tags":["x_refsource_MISC"],"url":"https://github.com/NationalSecurityAgency/emissary/pull/1286"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/references/1
{"name":"https://github.com/NationalSecurityAgency/emissary/pull/1288","tags":["x_refsource_MISC"],"url":"https://github.com/NationalSecurityAgency/emissary/pull/1288"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/references/2
{"name":"https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-3g6g-gq4r-xjm9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-3g6g-gq4r-xjm9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dfccd574a2cd5c925fac2df1a0c2425d5133c7b8fd1331c2737852941fefe55a · sha256:273e1e3d0e082a6e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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