Vulnerability Details CVE-2026-44654
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, a shared-agent editor can delete file records through `DELETE /api/files` that the owner has reused across multiple agents. The deletion removes the file globally — not just from the shared agent — breaking the owner's other private agents that reference the same `file_id`. The private agent retains a stale `file_id` reference that no longer resolves. A shared-agent editor can destroy files that the owner uses across multiple agents. The owner's private agents — which the attacker has no access to — break silently with stale `file_id` references. This is a cross-agent integrity violation: editing access to one agent should not affect another. Version 0.8.4 contains a patch.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.9%
CVSS Severity
CVSS v3 Score 8.1
References
Products affected by CVE-2026-44654
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cpe:2.3:a:librechat:librechat:-
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cpe:2.3:a:librechat:librechat:0.0.1
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cpe:2.3:a:librechat:librechat:0.0.2
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cpe:2.3:a:librechat:librechat:0.0.3
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cpe:2.3:a:librechat:librechat:0.0.4
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cpe:2.3:a:librechat:librechat:0.0.5
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cpe:2.3:a:librechat:librechat:0.0.6
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cpe:2.3:a:librechat:librechat:0.1.0
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cpe:2.3:a:librechat:librechat:0.1.1
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cpe:2.3:a:librechat:librechat:0.2.0
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cpe:2.3:a:librechat:librechat:0.3.0
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cpe:2.3:a:librechat:librechat:0.3.3
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cpe:2.3:a:librechat:librechat:0.4.0
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cpe:2.3:a:librechat:librechat:0.4.1
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cpe:2.3:a:librechat:librechat:0.4.2
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cpe:2.3:a:librechat:librechat:0.4.3
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cpe:2.3:a:librechat:librechat:0.4.4
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cpe:2.3:a:librechat:librechat:0.4.5
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cpe:2.3:a:librechat:librechat:0.4.6
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cpe:2.3:a:librechat:librechat:0.4.7
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cpe:2.3:a:librechat:librechat:0.4.8
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cpe:2.3:a:librechat:librechat:0.5.0
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cpe:2.3:a:librechat:librechat:0.5.1
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cpe:2.3:a:librechat:librechat:0.5.2
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cpe:2.3:a:librechat:librechat:0.5.3
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cpe:2.3:a:librechat:librechat:0.5.4
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cpe:2.3:a:librechat:librechat:0.5.5
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cpe:2.3:a:librechat:librechat:0.5.6
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cpe:2.3:a:librechat:librechat:0.5.7
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cpe:2.3:a:librechat:librechat:0.5.8
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cpe:2.3:a:librechat:librechat:0.5.9
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cpe:2.3:a:librechat:librechat:0.6.0
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cpe:2.3:a:librechat:librechat:0.6.1
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cpe:2.3:a:librechat:librechat:0.6.10
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cpe:2.3:a:librechat:librechat:0.6.5
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cpe:2.3:a:librechat:librechat:0.6.6
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cpe:2.3:a:librechat:librechat:0.6.9
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cpe:2.3:a:librechat:librechat:0.7.0
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cpe:2.3:a:librechat:librechat:0.7.1
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cpe:2.3:a:librechat:librechat:0.7.2
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cpe:2.3:a:librechat:librechat:0.7.3
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cpe:2.3:a:librechat:librechat:0.7.4
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cpe:2.3:a:librechat:librechat:0.7.5
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cpe:2.3:a:librechat:librechat:0.7.6
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cpe:2.3:a:librechat:librechat:0.7.7
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cpe:2.3:a:librechat:librechat:0.7.8
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cpe:2.3:a:librechat:librechat:0.7.9
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cpe:2.3:a:librechat:librechat:0.8.0
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cpe:2.3:a:librechat:librechat:0.8.1
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cpe:2.3:a:librechat:librechat:0.8.2
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cpe:2.3:a:librechat:librechat:0.8.3