CVE-2026-108600

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.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/open-multi-agent/open-multi-agent
https://github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/file-write.ts#L67
https://github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/path-safety.ts#L104-L113
https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape
https://www.vulncheck.com/advisories/open-multi-agent-1.5.0-through-1.21.2-sandbox-escape-via-file-write-dangling-symlink
https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape

Configurations

No configuration.

History

13 Oct 2026, 19:18

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape -~~	() https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape -

10 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-10 19:16

Updated : 2026-10-16 19:21

NVD link : CVE-2026-108600

Mitre link : CVE-2026-108600

CVE.ORG link : CVE-2026-108600

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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