Vulnerability · Published May 29, 2026 · Assigned by GitHub_M

CVE-2026-45626Arcane: OS Command Injection in Volume Browser ListDirectory via path query parameter

Medium 6.3

In plain English

A medium-severity OS command injection in arcane from getarcaneapp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.2%top 88.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Arcane is an interface for managing Docker containers, images, networks, and volumes. In 1.18.1 and earlier, GET /environments/{id}/volumes/{volumeName}/browse accepts a path query parameter that is passed to a shell command (sh -c "find … | while …") inside an Arcane helper container. The path sanitiser blocks ../ traversal but does not strip Bourne-shell metacharacters such as $() or backticks, and strconv.Quote only escapes Go string metacharacters, not shell substitution sequences. Any authenticated user with access to a browseable volume can execute arbitrary commands inside the helper container; command output is reflected back in the 500 error body.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/getarcaneapp/arcane/backend	no fix listed	GO-2026-5292
Go	github.com/getarcaneapp/arcane/backend	no fix listed	GHSA-9mvm-4gwg-v8mp

Affected products (as reported)

Vendor	Product	Versions
getarcaneapp	arcane	<= 1.18.1

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

https://github.com/getarcaneapp/arcane/security/advisories/GHSA-9mvm-4gwg-v8mp x_refsource_CONFIRM