PT-2026-111816 · Git+1 · Misskey

CVE-2026-104816

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Published

2026-10-13

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Updated

2026-10-13

CVSS v4.0

8.5

High

VectorAV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/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
Name of the Vulnerable Software and Affected Versions Misskey versions 12.0.0 through 2026.6.9
Description RSS components display feed item links from configured feeds without verifying their URL schemes. This lack of verification allows an attacker who controls feed content to provide a link with an unsafe scheme, leading to script execution when a user clicks the link within an RSS widget.
Recommendations Update to version 2026.7.0.

Exploit

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-104816
GHSA-P73X-6QRQ-34JC

Affected Products

Misskey