CVE-2026-47900

MEDIUM

Stored XSS via Unsanitized Plugin Metadata in Logseq

Title source: cna

Description

Logseq is vulnerable to a stored cross-site scripting (XSS). A malicious plugin can include a JavaScript payload in the "name" field of its "package.json" file, which is rendered using "innerHTML" without proper sanitization, allowing the execution of arbitrary code in the privileged host context. 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.

References (2)

Core 2

Core References

Third Party Advisory third-party-advisory

https://cert.pl/en/posts/2026/06/CVE-2026-9279/

Product product

https://logseq.com/

Scores

CVSS v4 4.6

EPSS 0.0014

EPSS Percentile 3.5%

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

logseq/logseq < 0.10.15

Published Jun 09, 2026

Tracked Since Jun 09, 2026