CVE-2026-95183Hinoki check available

Agent manipulation via context-compaction prompt injection

Published Oct 16, 2026 · Updated Oct 16, 2026

Prompt injection in DeepSeek Harness commit c291e796 allows attackers to influence agent behavior via crafted external content. Context compaction replaces older conversation history with a user-role summary, but the precise trust-boundary failure is not disclosed in the accessible record. Exploitation involves crafted external content reaching context compaction; downstream command execution, data theft, and required privileges are not established.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Prompt injection in DeepSeek Harness commit c291e796 allows attackers to influence agent behavior via crafted external content. Context compaction replaces older conversation history with a user-role summary, but the precise trust-boundary failure is not disclosed in the accessible record. Exploitation involves crafted external content reaching context compaction; downstream command execution, data theft, and required privileges are not established.

The record

CVE
CVE-2026-95183
Published
Oct 16, 2026
Updated
Oct 16, 2026
Vendor
DeepSeek AI
Product
DeepSeek Harness
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

DeepSeek AI · DeepSeek Harnessversion=n/a

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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