CVE-2026-109441
MEDIUM 6.9LangAlpha through 2026.09.07 contains an improper isolation vulnerability that places all tenants' sandbox containers on Docker's shared default bridge network with inter-container communication enabled. Authenticated users with code execution in their own sandbox can connect directly to other tenants' containers, bypassing require_workspace_owner checks to read files such as vault secrets from exposed servers.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 38th percentile
Impact if exploited
6.9CVSS 4.0 · MEDIUM
- ConfidentialityHigh
- IntegrityNone
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires a low-privilege account
- ⚠User interaction: Succeeds with passive user activity
- ⚠Complexity: Needs a race window or specific setup
- ⚠Requirements: Specific conditions must be present
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-653: Improper Isolation or Compartmentalization
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
References and research data (JSON)
All CVSS metrics
- MEDIUM 6.9 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N - MEDIUM 5.8 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N - MEDIUM 6.9 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - MEDIUM 5.8 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N
References
Exploit-tagged references (not proof of a PoC)
- https://www.lasso.security/vulnerability-database/cve-2026-109441 CVE record · VulnCheck · Updated 2026-10-20T00:46:06.033Z
NVD · CVE-2026-109441 · Updated 2026-10-20T20:11:29.833
Advisories
- https://www.vulncheck.com/advisories/langalpha-through-2026.09.07-cross-tenant-sandbox-exposure-via-shared-docker-bridge CVE record · VulnCheck · Updated 2026-10-20T00:46:06.033Z
NVD · CVE-2026-109441 · Updated 2026-10-20T20:11:29.833 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-104681 EUVD · EUVD-2026-104681
Technical & other
- https://github.com/ginlix-ai/LangAlpha/blob/435a5a44fabdeb33e409a62d233a936d96241c86/src/ptc_agent/config/core.py#L295 CVE record · VulnCheck · Updated 2026-10-20T00:46:06.033Z
NVD · CVE-2026-109441 · Updated 2026-10-20T20:11:29.833