CVE-2026-95183

DeepSeek Harness Context‑Compaction Prompt Injection Vulnerability

Published Oct 16, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
An issue in the context-compaction feature of DeepSeek Harness (dsh) commit c291e796 allows attackers to execute a prompt injection attack via crafted external content.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Deepseek
Deepseek deepseek-harness
Vendors & Products Deepseek
Deepseek deepseek-harness
Type Values Removed Values Added
Title DeepSeek Harness Context‑Compaction Prompt Injection Vulnerability
Type Values Removed Values Added
Title Prompt Injection via Context‑Compaction in DeepSeek Harness
Weaknesses CWE-20
Type Values Removed Values Added
Weaknesses CWE-94
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Prompt Injection via Context‑Compaction in DeepSeek Harness
Weaknesses CWE-20
Type Values Removed Values Added
Description An issue in the context-compaction feature of DeepSeek Harness (dsh) commit c291e796 allows attackers to execute a prompt injection attack via crafted external content.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 21, 2026, 1:55 AM
Reserved
Sep 22, 2026, 12:00 AM
Status
Deferred
Published
Oct 16, 2026, 3:17 PM
Modified
Oct 21, 2026, 2:17 AM