{"data":{"id":"38c37a8e-ac2c-49fa-829f-7893fb023c4c","title":"CVE-2026-54027: LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST…","summary":"LibreChat versions prior to 0.8.4-rc1 let any authenticated user upload files into any agent's tool_resources (such as context and execute_code) through the POST /api/files/images endpoint. This route lacks the ownership and EDIT permission check that POST /api/files received in an earlier patch, so an attacker can bypass that authorization by using the image endpoint instead.","solution":"Fixed in 0.8.4-rc1.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54027","publishedAt":"2026-06-25T17:16:40.397Z","cveId":"CVE-2026-54027","cweIds":["CWE-862"],"cvssScore":"6.5","cvssSeverity":"medium","severity":"medium","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["LibreChat"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"LibreChat file upload authorization bypass through image upload endpoint","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","attackVector":"network","attackComplexity":"low","privilegesRequired":"low","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00324,"epssCheckedAt":"2026-11-09T12:10:44.714Z","kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-11-10T00:11:44.441Z","patchAvailable":null,"disclosureDate":"2026-06-25T17:16:40.397Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":["CAPEC-122"],"crossRefCount":0,"attackSophistication":"trivial","impactType":["integrity","confidentiality"],"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null,"fixes":[]}}