Medium severity · published Jul 29, 2026
CVE-2026-67438
OliveTin OS Command Injection via Custom regex: Argument Type Bypassing Shell Safety Check
6.6
CVSS
1.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OL
OliveTin · OliveTin
>= 3000.2.0, < 3000.17.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67438
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67438
github.com
https://github.com/OliveTin/OliveTin/commit/995ff79736f2bccc364448a3ece84087b550b232
github.com
https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0
github.com
https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xc5w-4v5w-7x65
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