CVE-2026-85702Public exploitNetwork attack vector

Unauthenticated conversation API access via unchecked model

Published Sep 4, 2026 · Updated Sep 8, 2026

Missing authentication in FreeGPT WebUI 098db3dfeb41555c2ca9269df0f13e10ec1c35dc allows remote attackers to access its conversation API. The _conversation function in server/backend.py accepts a client-supplied model value and forwards the request to ChatCompletion.create without authenticating the caller. Any network client that can reach /backend-api/v2/conversation can submit prompts and consume the configured model service without an account or user interaction.

CVSS severity6.9
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authentication in FreeGPT WebUI 098db3dfeb41555c2ca9269df0f13e10ec1c35dc allows remote attackers to access its conversation API. The _conversation function in server/backend.py accepts a client-supplied model value and forwards the request to ChatCompletion.create without authenticating the caller. Any network client that can reach /backend-api/v2/conversation can submit prompts and consume the configured model service without an account or user interaction.

The record

CVE
CVE-2026-85702
Published
Sep 4, 2026
Updated
Sep 8, 2026
Vendor
ramon-victor
Product
FreeGPT WebUI
Classifications
CWE-306, CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=098db3dfeb41555c2ca9269df0f13e10ec1c35dc

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ramon-victor · FreeGPT WebUIversion=098db3dfeb41555c2ca9269df0f13e10ec1c35dc

Published CVSS scores

7.5TenableAV:N/AC:L/Au:N/C:P/I:P/A:P
6.9TenableCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.3TenableCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-306Missing Authentication for Critical Function
CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo