Curated Threat Feed

AI Threat Intelligence

A curated, CVE-style database of AI and GenAI security threats — mapped to the OWASP Top 10 for LLM Applications. Search and filter across attack classes.

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Showing 14 of 14 threats

CriticalPrompt InjectionLLM01: Prompt InjectionOSAI-2026-0847

Multi-turn prompt injection bypasses guardrails via context splitting

Attackers split a malicious instruction across several benign-looking turns so each message passes input filters, then reassemble it in the model's working context to override the system prompt.

Jan 13, 2026
#prompt-injection#guardrail-bypass#multi-turn
HighSupply ChainLLM05: Supply Chain VulnerabilitiesOSAI-2026-0846

Typosquatted model on public registry ships a backdoored tokenizer

A popular model name was typosquatted on a public hub. The malicious upload included a custom tokenizer that executed arbitrary code on load via unsafe deserialization.

Feb 27, 2026
#supply-chain#deserialization#model-registry
HighData LeakageLLM02: Sensitive Information DisclosureOSAI-2026-0845

Data exfiltration through markdown image rendering

Untrusted content instructs the model to embed conversation data in a markdown image URL. When the client auto-renders the response, the browser beacons the data to an attacker server.

Mar 5, 2026
#exfiltration#markdown#rendering
CriticalPrompt InjectionLLM01: Prompt InjectionOSAI-2026-0844

Indirect prompt injection via retrieved web content

A RAG agent ingests an attacker-controlled web page containing hidden instructions. The model treats the retrieved text as commands, hijacking downstream tool calls.

Apr 9, 2026
#indirect-injection#rag#agents
MediumData PoisoningLLM04: Data and Model PoisoningOSAI-2026-0843

Training data poisoning skews sentiment classifier

Crafted samples injected into a crowd-sourced dataset created a trigger phrase that flips classifier output, demonstrating a low-cost integrity attack on fine-tuning pipelines.

May 19, 2026
#poisoning#fine-tuning#backdoor
HighPrompt LeakLLM07: System Prompt LeakageOSAI-2026-0842

System prompt extraction via role-play framing

A layered role-play scenario convinces the model to disclose its hidden system prompt, exposing embedded business logic and, in some deployments, secrets.

Jun 21, 2026
#prompt-leak#roleplay#system-prompt
CriticalAgent SecurityLLM06: Excessive AgencyOSAI-2026-0841

Excessive agency: unsandboxed tool call enables file deletion

An agent with an unrestricted shell tool followed injected instructions to delete files. Highlights the need for allow-lists and human approval on destructive actions.

Jul 4, 2026
#agents#tools#excessive-agency
HighAdversarial MLLLM01: Prompt InjectionOSAI-2026-0840

Adversarial suffix transfers across open models

A gradient-optimized adversarial suffix crafted on one open-weight model reliably jailbreaks several others, showing attack transferability across the ecosystem.

Jul 11, 2026
#adversarial#jailbreak#transferability
MediumPrivacyLLM02: Sensitive Information DisclosureOSAI-2026-0839

Membership inference recovers PII from fine-tuned model

By probing confidence scores, researchers determined whether specific records were in the fine-tuning set, leaking sensitive membership information.

Jul 18, 2026
#privacy#membership-inference#pii
MediumResource AbuseLLM10: Unbounded ConsumptionOSAI-2026-0838

Unbounded generation loop drives denial-of-wallet

Crafted inputs coerce a model into extremely long or recursive generations, spiking token spend and latency — an availability and cost attack on metered APIs.

Jul 25, 2026
#dos#denial-of-wallet#rate-limiting
HighOutput HandlingLLM05: Improper Output HandlingOSAI-2026-0837

Insecure output handling leads to stored XSS

Model output containing a script payload was rendered without sanitization in a web app, resulting in stored cross-site scripting against other users.

Jul 28, 2026
#xss#output-handling#web
MediumData PoisoningLLM04: Data and Model PoisoningOSAI-2026-0836

Vector store poisoning corrupts RAG retrieval

An attacker inserts documents engineered to rank highly for common queries, steering the retrieval layer toward attacker-chosen content.

Aug 2, 2026
#rag#vector-store#poisoning
LowObfuscationLLM01: Prompt InjectionOSAI-2026-0835

Zero-width character smuggling evades keyword filters

Instructions hidden with zero-width and bidirectional Unicode characters pass human review and naive filters while remaining fully legible to the model.

Aug 6, 2026
#obfuscation#unicode#filter-evasion
MediumPrivacyLLM02: Sensitive Information DisclosureOSAI-2026-0834

Model inversion reconstructs faces from embeddings API

Repeated queries against an embeddings endpoint allowed partial reconstruction of training images, underscoring the sensitivity of exposed model internals.

Aug 8, 2026
#privacy#model-inversion#embeddings