Vulnerability · Published Jul 29, 2026 · Assigned by GitHub_M
CVE-2026-67438OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check
Medium 6.6
In plain English
A medium-severity OS command injection in OliveTin from OliveTin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
OliveTin gives access to predefined shell commands from a web interface. From 3000.2.0 until 3000.17.0, the service/internal/executor/arguments.go checkShellArgumentSafety function does not treat regex: custom argument types as unsafe for Shell mode actions, allowing values that pass typeSafetyCheckRegex to be interpolated by wrapCommandInShell into an sh -c command string and enabling OS command injection. This issue is fixed in version 3000.17.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/OliveTin/OliveTin | 0.0.0-20260708084548-995ff79736f2 | GHSA-xc5w-4v5w-7x65 |
| Go | github.com/OliveTin/OliveTin | 0.0.0-20260708084548-995ff79736f2 | GO-2026-6145 |
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H