CVE-2026-108600
open-multi-agent 1.5.0 through 1.21.2 Sandbox Escape via file_write Dangling Symlink
open-multi-agent open-multi-agent
CVSS
5.7MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.15%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
open-multi-agent (@open-multi-agent/core) 1.5.0 through 1.21.2 contains a link following vulnerability in the file_write tool sandbox that allows attackers to create files outside the workspace root by using dangling symlinks. Attackers can plant a dangling symlink in the workspace and steer the agent via prompt injection to write attacker-influenced content anywhere the agent process can write.
Text from CVE List
Affected versions 1
- open-multi-agentaffected: 1.5.0 through 1.21.2CVE List
References 5
- vulncheck.com/advisories/open-multi-agent-1.5.0-through-1.21.2-sandbox-escape-via-file-write-dangling-symlinkAdvisoryvia CVE List
- hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escapeExploitvia CVE List
- github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/path-safety.ts#L104-L113Referencevia CVE List
- github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/file-write.ts#L67Referencevia CVE List
- github.com/open-multi-agent/open-multi-agentReferencevia CVE List