Vulnerability · Published Mar 10, 2026 · Assigned by GitHub_M

CVE-2026-31817OliveTin's unsafe parsing of UniqueTrackingId can be used to write files

High 8.5

In plain English

A high-severity path traversal in OliveTin from OliveTin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.8%top 42.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/OliveTin/OliveTin	0.0.0-20260309102040-b03af0e2eca3	GHSA-364q-w7vh-vhpc
Go	github.com/OliveTin/OliveTin	0.0.0-20260309102040-b03af0e2eca3	GO-2026-4670

Affected products (as reported)

Vendor	Product	Versions
OliveTin	OliveTin	< 3000.11.2

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

References

https://github.com/OliveTin/OliveTin/security/advisories/GHSA-364q-w7vh-vhpc x_refsource_CONFIRM