{"data":{"id":"b5c6077e-df95-44b0-9df9-6737fb6a1e39","title":"The Illusion of Rationality: Tacit Bias and Strategic Dominance in Frontier LLM Negotiation Games","summary":"Researchers revisited the NegotiationArena framework and ran controlled simulations of frontier LLMs across three multiturn bargaining games: buyer-seller, multiturn ultimatum, and resource exchange. Models diverged into model-specific strategic equilibria rather than converging, showed persistent numerical and semantic anchoring where initial offers predicted final agreements, and some models systematically achieved higher payoffs than others.","solution":"N/A -- no mitigation discussed in source.","labels":["research","safety"],"sourceUrl":"http://ieeexplore.ieee.org/document/11573655","publishedAt":"2026-06-22T13:18:18.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"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":"2026-06-22T13:18:18.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":null,"aiComponentTargeted":null,"llmSpecific":true,"classifierConfidence":0.85,"researchCategory":"peer_reviewed","atlasIds":null}}