CVE-2026-67438: Command Injection (CVSS 6.6)

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.

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CVSS v3.1 Score

6.6

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0100

Probability of exploitation

0.59%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://github.com/OliveTin/OliveTin/commit/995ff79736f2bccc364448a3ece84087b550b232 https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0 https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xc5w-4v5w-7x65 https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xc5w-4v5w-7x65

Frequently Asked Questions

What is CVE-2026-67438? +

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. It has a CVSS v3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2026-67438? +

CVE-2026-67438 has a CVSS v3.1 score of 6.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0100, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-67438? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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