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Memory poisoning

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An injection that writes to an agent's long-term memory, a retrieval corpus, a vector store or a hosted memory service, and so taints every later session that reads from that store 1. OWASP's agentic list has it as ASI06 Memory & Context Poisoning 2 and MITRE ATLAS as AI Agent Context Poisoning (AML.T0080) 3.

Developed in
ch. 23, Memory and context governance
Chapters
ch. 23, AI Agents
Contrast with
Prompt injection
Source
3 numbered references, listed below

Where it is used

One chapter of the Body of Knowledge uses the term. Each link opens the first section that does.

Memory poisoning: mentions per chapter2 mentions of the term across 1 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Cross-referenced chapter23 AI Agents: 2 mentions23 AI Agents2No mentions in the other 22 chaptersSource: the Body of Knowledgev0.5.0
Memory poisoning: mentions per chapter2 mentions of the term across 1 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Cross-referenced chapter0001020304050607081011121314151617181920212223 AI Agents: 2 mentions223Source: the Body of Knowledge v0.5.0
Mentions per chapter How often each chapter names the term, with the chapters the glossary cross-references drawn solid. The longest bar is where to read the term in use; bars spread across many chapters mark a term that runs through the discipline.
Mentions as a table
Mentions of Memory poisoning per chapter
ChapterMentionsCross-referenced
00 Preface0No
01 Definition0No
02 Why Now0No
03 Values & Principles0No
04 The Stack0No
05 Patterns0No
06 The Role0No
07 Maturity Model0No
08 Regulatory Map0No
10 Reading List0No
11 AI Defined0No
12 Governance Program0No
13 Risk Management0No
14 Development0No
15 Deployment0No
16 Fairness & XAI0No
17 Incidents0No
18 EU AI Act0No
19 Privacy & AI0No
20 Existing Law0No
21 AI Laws Worldwide0No
22 Principles & Standards0No
23 AI Agents2Yes
  • ATLAS

    MITRE's Adversarial Threat Landscape for Artificial-Intelligence Systems, a knowledge base of adversary tactics and techniques against AI, including…

Sources

  1. [1] OWASP GenAI LLM Top 10 2026 (published 3 Aug 2026; LLM01:2026 Prompt Injection, incl. memory persistence; LLM08:2026 Hidden Context Exposure, which replaced System Prompt Leakage: assume hidden context is discoverable, no credentials in it, not a security boundary; final text in github.com/GenAI-Security-Project/GenAI-LLM-Top10, 2026/final). OWASP GenAI Security Project. 2026-08-03. https://genai.owasp.org/resource/owasp-genai-llm-top-10-2026/ (verified: primary)
  2. [2] Top 10 for Agentic Applications 2026 (ASI01 Agent Goal Hijack; ASI02 Tool Misuse and Exploitation; ASI03 Identity and Privilege Abuse; ASI04 Agentic Supply Chain Vulnerabilities; ASI05 Unexpected Code Execution (RCE); ASI06 Memory & Context Poisoning; ASI07 Insecure Inter-Agent Communication; ASI08 Cascading Failures; ASI09 Human-Agent Trust Exploitation; ASI10 Rogue Agents; Least-Agency; per-tool least-privilege profiles; tool poisoning of a legitimate tool's interface under ASI02, a tool compromised at the source under ASI04). OWASP GenAI Security Project. 2025-12-09. https://genai.owasp.org/resource/owasp-top-10-for-agentic-applications-for-2026/ (verified: primary)
  3. [3] MITRE ATLAS data, release v2026.09 (AML.T0080 AI Agent Context Poisoning, .000 Memory; AML.T0110 AI Agent Tool Poisoning). MITRE. 2026-09-15. https://github.com/mitre-atlas/atlas-data/releases/tag/v2026.09 (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Memory poisoning. In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/memory-poisoning. CC BY 4.0

BibTeX

@misc{aige2026memorypoisoning,
  author  = {Jorge García Aibar},
  title   = {{Memory poisoning}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/memory-poisoning}
}