{"data":{"id":"9820a2f7-95b9-4183-8088-efb1066a9d79","title":"Signed but Not Safe: Requirement Integrity in Multi-Agent LLM Handoffs","summary":"A preregistered study compares free-text, structured JSON and HMAC-SHA256-signed requirement manifests for handoffs between LLM subagents, using Qwen3-8B across 1,440 trajectories. Signed manifests cut unsafe commits under attack from 69.4% to 9.0%, but a single adversarial line added before signing raised signed-manifest violations to 14.6% to 75.0% depending on the model, and the signature then authenticated the corrupted manifest.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2611.07483v1","publishedAt":"2026-11-05T05:43:47.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["prompt_injection"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["OpenAI"],"affectedVendorsRaw":["Qwen3-8B","gpt-oss-20b","GPT-5.6-luna"],"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":"2026-11-05T05:43:47.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity","safety"],"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.93,"researchCategory":"preprint","atlasIds":["AML.T0051"]}}