{"data":{"id":"4de30796-ca82-447d-a162-8aa9f4dbd590","title":"ANGLER: Verifier-Grounded Benchmarking with an Adaptive Attacker for Web Agents","summary":"Researchers introduce REEF, a benchmark of 9 verifier-grounded websites that pairs benign web-agent tasks with malicious objectives delivered through 5 attack types, and ANGLER, an adaptive attack framework that uses execution feedback to mutate attacks. Across 8 VLM-based web agents, ANGLER reaches a 20.36% end-to-end attack success rate versus 15.24% for a non-adaptive setting. It also cuts benign task success from 61.9% to 44.4% compared with attack-free execution.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2610.41272v1","publishedAt":"2026-10-30T05:25:48.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["prompt_injection"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["VLM-based web agents"],"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":"2026-10-30T05:25:48.000Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity","confidentiality"],"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":"preprint","atlasIds":["AML.T0051"]}}