CVE-2026-85621Public exploitNetwork attack vectorHinoki check available

Unauthorized agent execution via unsigned webhook messages

Published Sep 4, 2026 · Updated Sep 4, 2026

Authentication bypass in LobeHub 2.2.15 and earlier allows remote attackers to inject forged QQ or Feishu bot messages. The route delegates verification to adapters, but QQ dispatch events never verify Ed25519 headers and Feishu skips its optional token gate by default. Knowledge of the public platform and app ID is sufficient to impersonate a sender, consume model quota, and drive configured agent tools.

CVSS severity6.9
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in LobeHub 2.2.15 and earlier allows remote attackers to inject forged QQ or Feishu bot messages. The route delegates verification to adapters, but QQ dispatch events never verify Ed25519 headers and Feishu skips its optional token gate by default. Knowledge of the public platform and app ID is sufficient to impersonate a sender, consume model quota, and drive configured agent tools.

The record

CVE
CVE-2026-85621
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
LobeHub
Product
LobeHub
Classifications
CWE-345, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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 <=2.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LobeHub · LobeHubversion=0 <=2.2.15

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

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-345Insufficient Verification of Data Authenticity
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

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Your stack

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