Path traversal in emissary - CVE-2026-35583
Published: April 7, 2026
Vulnerability identifier: #VU125046
CSH Severity: Medium
CVSS v4 BT: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2026-35583
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to path traversal in the configuration API endpoint /api/configuration/{name} when processing crafted configuration names. A remote attacker can send a specially crafted request to disclose sensitive information.
The issue can be triggered by using URL-encoded variants, double-encoded sequences, or Unicode normalization to access configuration files outside the intended directory.
Affected software
emissary
How to mitigate CVE-2026-35583
Install security update from vendor's website.
emissary - update to 8.39.0