TI-2026-47718 Aliases CVE-2026-67438 GHSA-xc5w-4v5w-7x65

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

MEDIUM 64CWE-78Published 2026-07-29 · Updated 2026-07-30

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: High
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0159 75th percentileScored 2026-11-07

Fix Fixed OliveTin (OliveTin): 3000.17.0github.com/OliveTin/OliveTin (Go): 0.0.0-20260708084548-995ff79736f2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OliveTin	OliveTin	3000.2.0 to before 3000.17.0	3000.17.0	Patch available	CNA
—	github.com/OliveTin/OliveTin (Go)	0.0.0-20251025234746-ef5a67e7b8ea to before 0.0.0-20260708084548-995ff79736f2	0.0.0-20260708084548-995ff79736f2	Patch available	GHSA-xc5w-4v5w-7x65

OliveTin VendorOliveTin Affected 3000.2.0 to before 3000.17.0 Fixed in 3000.17.0 Patch available CNA
github.com/OliveTin/OliveTin (Go) Vendor— Affected 0.0.0-20251025234746-ef5a67e7b8ea to before 0.0.0-20260708084548-995ff79736f2 Fixed in 0.0.0-20260708084548-995ff79736f2 Patch available GHSA-xc5w-4v5w-7x65

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:olivetin:olivetin::::::::	—	—	OliveTin

cpe:2.3:a:olivetin:olivetin:*:*:*:*:*:*:*:* Versions — — ·OliveTin

Remediation

Fix · CNA OliveTin (OliveTin) Fixed in 3000.17.0
Fix · GHSA-xc5w-4v5w-7x65 github.com/OliveTin/OliveTin (Go) Fixed in 0.0.0-20260708084548-995ff79736f2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-67438
2026-10-03 Alias added: GHSA-xc5w-4v5w-7x65

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-67438

Other 4

TI-2026-23456 OliveTin: JWT Audience Validation Bypass in Local Key and HMAC Modes CVSS 3.1HIGH 8.8
TI-2026-22008 OS command injection in OliveTin CVSS 3.1CRITICAL 10.0
TI-2026-47717 OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth) CVSS 3.1HIGH 7.5
TI-2026-22985 OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login CVSS 3.1HIGH 7.5
TI-2026-22984 OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling CVSS 3.1HIGH 7.5
TI-2026-22627 OliveTin: Unauthenticated Denial of Service via Memory Exhaustion in PasswordHash API Endpoint CVSS 3.1HIGH 7.5

See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences