{"data":{"id":"1f3aa252-597e-4949-b88d-3c7001488333","title":"Probing Local Conditional Fit for Diffusion Model Membership Inference","summary":"Researchers propose LoFIT (Local Conditional Fit), a membership inference method for text-to-image diffusion models that measures the initial response of the denoising loss along normalized conditional prediction shifts. The method needs only forward queries to the denoiser, no target-model gradients. Across four datasets it improves membership discrimination on fine-tuned and pretrained models, and it separates members early in fine-tuning where the naive denoising-loss baseline stays near chance.","solution":"N/A -- no mitigation discussed in source.","labels":["research","privacy"],"sourceUrl":"https://arxiv.org/abs/2611.02578v1","publishedAt":"2026-11-02T06:03:54.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["membership_inference"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":[],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-11-02T06:03:54.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["confidentiality"],"aiComponentTargeted":"model","llmSpecific":false,"classifierConfidence":0.93,"researchCategory":"preprint","atlasIds":["AML.T0024.000"]}}