Path Traversal in Olivetin
CVE-2026-31817
OliveTin gives access to predefined shell commands from a web interface. Prior to 3000.11.2, when the saveLogs feature is enabled, OliveTin persists execution log entries to disk. The filename used for these log files is constructed in part from the user-supplied UniqueTrackingId field in the StartAction API request. This value is not validated or sanitized before being used in a file path, allowing an attacker to use directory traversal sequences (e.g., ../../../) to write files to arbitrary locations on the filesystem. This vulnerability is fixed in 3000.11.2.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.007 (49.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L.
Affected products
- Olivetin — versions < 3000.11.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-31817?
- CVE-2026-31817 is a high-severity vulnerability in Olivetin, classified under Path Traversal. CVSS score: 8.5/10. Published 2026-03-10.
- How severe is CVE-2026-31817?
- High severity. CVSS v3 base score is 8.5 out of 10.