Vulnerability in Open-Multi-Agent
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.
Published .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape (third-party-advisory)
- github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47… (technical-description)
- github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47… (technical-description)
- github.com/open-multi-agent/open-multi-agent (product)
- www.vulncheck.com/advisories/open-multi-agent-1.5.0-through-1.21.2-sandbox-esca… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108600?
- CVE-2026-108600 is a medium-severity vulnerability in Open-Multi-Agent, classified under Improper Link Resolution Before File Access. CVSS score: 4.7/10. Published 2026-10-10.
- How severe is CVE-2026-108600?
- Medium severity. CVSS v3 base score is 4.7 out of 10.