TI-2026-70824 Aliases CVE-2026-108789 GHSA-wc99-rg5g-w3c8

deepseek-ai deepseek-harness dsh-workflow-worker-thread agent behavioral workflow

MEDIUM 56CWE-840Published 2026-10-12 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability was identified in deepseek-ai deepseek-harness up to 0.1.1-rc.2. This affects the function agent of the component dsh-workflow-worker-thread. The manipulation leads to enforcement of behavioral workflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00176 7th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
deepseek-ai	deepseek-harness	0.1.1-rc.0; 0.1.1-rc.1; 0.1.1-rc.2	—	No fix listed	CNA

deepseek-harness Vendordeepseek-ai Affected 0.1.1-rc.0; 0.1.1-rc.1; 0.1.1-rc.2 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:deepseek-ai:deepseek-harness::::::::	—	—	—

cpe:2.3:a:deepseek-ai:deepseek-harness:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-12 Threatist record created from CVE-2026-108789
2026-10-12 Alias added: GHSA-wc99-rg5g-w3c8
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: LOW → MEDIUM

References

Exploit 1

https://mcniyfj5bw9b.feishu.cn/docx/M5H6d9AbioNftYxwk9CchJgGnHc

Other 2

TI-2026-65111 deepseek-ai deepseek-harness Landlock Backend profiles.ts isolation CVSS 4.0MEDIUM 4.8
TI-2026-85128 Missing authentication in DeepSeek RPC allows command execution CVSS 4.0HIGH 8.6
TI-2026-83554 Path traversal in DeepInfer lets attackers create directories CVSS 4.0MEDIUM 6.3
TI-2026-65131 deepseek-ai deepseek-harness Code Mode Sandbox run_code sandbox CVSS 4.0MEDIUM 5.3
TI-2026-70823 deepseek-ai deepseek-harness Sandbox spawn sandbox CVSS 4.0MEDIUM 4.8
TI-2026-65140 deepseek-ai deepseek-harness dsh index.ts reliance on untrusted inputs in a security decision CVSS 4.0MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences