Medium severity · published Oct 26, 2026
CVE-2026-116367
DeepSeek Harness sandbox.ts createContext
New
6.3
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability was found in DeepSeek Harness up to 0.1.0-rc.5. This vulnerability affects the function createContext of the file packages/extensions/cordis-host-runner/src/sandbox.ts. The manipulation results in sandbox issue. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
Harness · DeepSeek
0.1.0-rc.0; 0.1.0-rc.1; 0.1.0-rc.2; 0.1.0-rc.3; 0.1.0-rc.4; 0.1.0-rc.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116367
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116367
vuldb.com
https://vuldb.com/cve/CVE-2026-116367
vuldb.com
https://vuldb.com/submit/1012736
vuldb.com
https://vuldb.com/vuln/426331
vuldb.com
https://vuldb.com/vuln/426331/cti
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