CVE-2026-0558Public exploitNetwork attack vector

Unauthenticated file processing via missing authentication dependency

Published Mar 29, 2026 · Updated Mar 29, 2026

Improper authentication in ParisNeo LoLLMS before 2.2.0 allows remote attackers to upload and process files through an unprotected API. In backend/routers/files.py, extract_text_from_file accepts an UploadFile and invokes extraction without Depends(get_current_active_user). Any network client reaching the FastAPI service can trigger parser work without an account, causing resource exhaustion and the reported disclosure of processed content.

CVSS severity7.5
High
EPSS probability1.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in ParisNeo LoLLMS before 2.2.0 allows remote attackers to upload and process files through an unprotected API. In backend/routers/files.py, extract_text_from_file accepts an UploadFile and invokes extraction without Depends(get_current_active_user). Any network client reaching the FastAPI service can trigger parser work without an account, causing resource exhaustion and the reported disclosure of processed content.

The record

CVE
CVE-2026-0558
Published
Mar 29, 2026
Updated
Mar 29, 2026
Vendor
ParisNeo
Product
LoLLMS
Classifications
CWE-287, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 29, 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=unspecified <2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ParisNeo · LoLLMSversion=unspecified <2.2.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1499.003Application Exhaustion Flood

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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