CVE-2026-47901

Privileged JavaScript execution via host-DOM attribute injection

Published Jun 9, 2026 · Updated Jun 9, 2026

Sandbox escape in Logseq 0.10.15 allows attackers to execute JavaScript in the privileged host context through a malicious plugin. Sandboxed plugin iframes can inject arbitrary HTML attributes, including event handlers, into their host-DOM container because CSP is disabled. A user must load the malicious plugin; successful exploitation exposes filesystem APIs to code running with the application's privileges.

CVSS severity4.6
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in Logseq 0.10.15 allows attackers to execute JavaScript in the privileged host context through a malicious plugin. Sandboxed plugin iframes can inject arbitrary HTML attributes, including event handlers, into their host-DOM container because CSP is disabled. A user must load the malicious plugin; successful exploitation exposes filesystem APIs to code running with the application's privileges.

The record

CVE
CVE-2026-47901
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Logseq
Product
Logseq
Classifications
CWE-79, T1059.007
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 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 <=0.10.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Logseq · Logseqversion=0 <=0.10.15

Published CVSS scores

4.6CERT.PLCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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