CVE-2026-108600CWE-59

CVE-2026-108600

Medium · published October 10, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS v4.0
5.7 · CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00148 · 3.7th percentile
Weakness
CWE-59 · Improper Link Resolution Before File Access ('Link Following')
Published
2026-10-10T23:16Z
References (6)
https://github.com/open-multi-agent/open-multi-agent · [email protected]https://github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/file-write.ts#L67 · [email protected]https://github.com/open-multi-agent/open-multi-agent/blob/6ec5498643c7e431aa66751f17f47a529e7f927c/packages/core/src/tool/built-in/path-safety.ts#L104-L113 · [email protected]https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape · [email protected]https://www.vulncheck.com/advisories/open-multi-agent-1.5.0-through-1.21.2-sandbox-escape-via-file-write-dangling-symlink · [email protected]https://hackmd.io/@haind/open-multi-agent-file-write-dangling-symlink-escape · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 10 OCT 18:58Z
    open-multi-agent 1.5.0 through 1.21.2 Sandbox Escape via file_write Dangling Symlink
    cvelistv5
  • 10 OCT 18:58Z
    open-multi-agent 1.5.0 through 1.21.2 Sandbox Escape via file_write Dangling Symlink
    cvelistv5