CVE-2026-35583: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in NationalSecurityAgency emissary
Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the configuration API endpoint (/api/configuration/{name}) validated configuration names using a blacklist approach that checked for \, /, .., and trailing .. This could potentially be bypassed using URL-encoded variants, double-encoding, or Unicode normalization to achieve path traversal and read configuration files outside the intended directory. This vulnerability is fixed in 8.39.0.
AI Analysis
Technical Summary
Emissary, a P2P data-driven workflow engine by the NationalSecurityAgency, had a path traversal vulnerability (CWE-22) in its configuration API endpoint before version 8.39.0. The endpoint validated configuration names using a blacklist that checked for characters like \, /, .., and trailing .., but this validation could be bypassed using URL-encoded variants, double-encoding, or Unicode normalization. Exploiting this flaw could allow an attacker to read configuration files outside the intended directory. The vulnerability is addressed in Emissary version 8.39.0.
Potential Impact
An attacker can exploit this vulnerability to read configuration files outside the intended directory, potentially exposing sensitive configuration data. The CVSS score of 5.3 reflects a medium impact with confidentiality loss but no impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in Emissary version 8.39.0. Users should upgrade to version 8.39.0 or later to remediate this issue. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 8.39.0. No additional mitigation steps are indicated.
CVE-2026-35583: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in NationalSecurityAgency emissary
Description
Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the configuration API endpoint (/api/configuration/{name}) validated configuration names using a blacklist approach that checked for \, /, .., and trailing .. This could potentially be bypassed using URL-encoded variants, double-encoding, or Unicode normalization to achieve path traversal and read configuration files outside the intended directory. This vulnerability is fixed in 8.39.0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Emissary, a P2P data-driven workflow engine by the NationalSecurityAgency, had a path traversal vulnerability (CWE-22) in its configuration API endpoint before version 8.39.0. The endpoint validated configuration names using a blacklist that checked for characters like \, /, .., and trailing .., but this validation could be bypassed using URL-encoded variants, double-encoding, or Unicode normalization. Exploiting this flaw could allow an attacker to read configuration files outside the intended directory. The vulnerability is addressed in Emissary version 8.39.0.
Potential Impact
An attacker can exploit this vulnerability to read configuration files outside the intended directory, potentially exposing sensitive configuration data. The CVSS score of 5.3 reflects a medium impact with confidentiality loss but no impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in Emissary version 8.39.0. Users should upgrade to version 8.39.0 or later to remediate this issue. Patch status is not explicitly confirmed in the vendor advisory, but the fix is stated to be included in version 8.39.0. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-03T20:09:02.827Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5314faaed68159a339928
Added to database: 4/7/2026, 4:31:11 PM
Last enriched: 4/7/2026, 4:46:52 PM
Last updated: 4/8/2026, 12:41:58 AM
Views: 9
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