Iframe escape by plugins in Logseq
CVE-2026-47901

4.6MEDIUM

Key Information:

Vendor

Logseq

Status
Logseq
Vendor
CVE Published:
9 June 2026

What is CVE-2026-47901?

Logseq is vulnerable to a sandbox escape flaw where plugins running in sandboxed iframes can inject arbitrary HTML attributes, such as event handlers, into their container element in the host DOM. Due to a disabled Content Security Policy (CSP), this allows a malicious plugin to execute arbitrary JavaScript in the privileged host context, potentially gaining unauthorized access to filesystem APIs. While only version v0.10.15 was tested and confirmed as vulnerable, status of other versions is unknown since this issue was not addressed by a patch.

Affected Version(s)

logseq 0 <= 0.10.15

References

https://cert.pl/en/posts/2026/06/CVE-2026-9279/
third-party-advisory
https://logseq.com/
product

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bartłomiej Dmitruk (striga.ai)
.