CVE-2026-44654Public exploitNetwork attack vector

Cross-agent file deletion via unscoped record removal

Published Jun 2, 2026 · Updated Jun 2, 2026

Incorrect authorization in LibreChat 0.8.3 and earlier allows remote authenticated users to delete files used by private agents. The DELETE /api/files handler removes a record by file_id without scoping the operation to the shared agent presented in the request. An account with editor access to one shared agent can invalidate the owner's unrelated private-agent references, leaving those agents with stale file identifiers.

CVSS severity8.1
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in LibreChat 0.8.3 and earlier allows remote authenticated users to delete files used by private agents. The DELETE /api/files handler removes a record by file_id without scoping the operation to the shared agent presented in the request. An account with editor access to one shared agent can invalidate the owner's unrelated private-agent references, leaving those agents with stale file identifiers.

The record

CVE
CVE-2026-44654
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
Danny Avila
Product
LibreChat
Classifications
CWE-863, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.8.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Danny Avila · LibreChatversion=< 0.8.5

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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