DeepSeek Harness up to 0.1.0-rc.5 sandbox.ts createContext

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k1.55

Summaryinfo

A vulnerability has been found in DeepSeek Harness up to 0.1.0-rc.5 and classified as critical. This issue affects the function createContext of the file packages/extensions/cordis-host-runner/src/sandbox.ts. This manipulation causes sandbox. This vulnerability is handled as CVE-2026-116367. The attack can be initiated remotely. There is not any exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as critical was found in DeepSeek Harness up to 0.1.0-rc.5. Affected by this vulnerability is the function createContext of the file packages/extensions/cordis-host-runner/src/sandbox.ts. The manipulation with an unknown input leads to a sandbox vulnerability. The CWE definition for the vulnerability is CWE-265. As an impact it is known to affect confidentiality, integrity, and availability.

This vulnerability is known as CVE-2026-116367. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/26/2026). The attack technique deployed by this issue is T1611 according to MITRE ATT&CK.

The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sandbox
CWE: CWE-265 / CWE-264
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/26/2026 Advisory disclosed
10/26/2026 +0 days VulDB entry created
10/26/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-116367 (🔒)
GCVE (CVE): GCVE-0-2026-116367
GCVE (VulDB): GCVE-100-426331

Entryinfo

Created: 10/26/2026 09:06
Changes: 10/26/2026 09:06 (51)
Complete: 🔍
Submitter: JerryGW
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1012736: DeepSeek deepseek-harness（@deepseek-ai/dsh，DeepSeek Harness） 0.2.0-rc.2 Remote Code Execution (by JerryGW)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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