CVE-2026-67438CWE-78

OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check

Medium · published July 29, 2026

CVSS v3.1
6.6
EPSS
2%
Percentile
75.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.6 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01590 · 75.5th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-07-29T20:53Z
EPSS history
Timeline
  • 29 JUL 20:53Z
    OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check
    cvelistv5