PT-2026-67531 · Misskey · Misskey
CVE-2026-46713
·
Published
2026-08-03
·
Updated
2026-08-04
CVSS v4.0
9.2
Critical
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:H/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 12.37.0 through 2026.5.3
Description
A flaw exists in the JSON-LD signature validation and compaction process. This allows spoofed activities to be accepted as valid. JSON-LD is a method of encoding Linked Data using JSON.
Recommendations
Update to version 2026.5.4.
Exploit
Fix
Improper Verification of Cryptographic Signature
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Weakness Enumeration
Related Identifiers
Affected Products
Misskey