CVE-2026-42045Public exploitNetwork attack vector

Command execution via unsafe artifact rendering and IPC

Published May 12, 2026 · Updated May 12, 2026

Stored XSS in LobeHub before 2.1.48 allows remote attackers to execute commands through malicious LLM output in the desktop client. The artifact renderer sends unmatched custom-tag content to HTMLRenderer without neutralizing active markup, exposing electronAPI to injected script and its unfiltered runCommand IPC handler. Execution requires a user to configure the attacker's LLM endpoint and chat in the Electron client; commands run with the current user's privileges.

CVSS severity6.2
Medium
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

Stored XSS in LobeHub before 2.1.48 allows remote attackers to execute commands through malicious LLM output in the desktop client. The artifact renderer sends unmatched custom-tag content to HTMLRenderer without neutralizing active markup, exposing electronAPI to injected script and its unfiltered runCommand IPC handler. Execution requires a user to configure the attacker's LLM endpoint and chat in the Electron client; commands run with the current user's privileges.

The record

CVE
CVE-2026-42045
Published
May 12, 2026
Updated
May 12, 2026
Vendor
LobeHub
Product
LobeHub
Classifications
CWE-78, CWE-79, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=< 2.1.48

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

LobeHub · LobeHubversion=< 2.1.48

Published CVSS scores

6.2GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059Command and Scripting Interpreter

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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