CVE-2023-54331

Outline 1.6.0 - Unquoted Service Path

CVSS 8.5 HIGHEPSS 0.2%CWE-428

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

13 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Outline 1.6.0 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the unquoted service path in the OutlineService executable to inject malicious code that will be executed with LocalSystem permissions.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Getoutline · Outline

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References

https://getoutline.org/https://www.exploit-db.com/exploits/51128 https://www.vulncheck.com/advisories/outline-unquoted-service-path