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NVD Vulnerability Details :
CVE-2025-66402
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-16 Dec, 2025 | 00:16
Updated At-06 Jan, 2026 | 19:42

Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
Primary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
Type: Primary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CPE Matches
misskey
misskey
>>misskey>>Versions from 13.1.0(inclusive) to 2025.12.0(exclusive)
cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:-:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta16:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta21:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta22:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta23:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta24:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta25:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta26:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta27:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta28:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta29:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta30:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta31:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta32:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta33:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta34:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta35:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta36:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta37:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta38:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta39:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta40:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta41:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta42:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:beta43:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc1:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc10:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc11:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc2:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc3:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc4:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc5:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc6:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc7:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc8:*:*:*:*:*:*
misskey
misskey
>>misskey>>13.0.0
cpe:2.3:a:misskey:misskey:13.0.0:rc9:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-862Secondarysecurity-advisories@github.com
CWE ID: CWE-862
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57bsecurity-advisories@github.com
Patch
https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3security-advisories@github.com
Exploit
Vendor Advisory
https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Vendor Advisory
Hyperlink: https://github.com/misskey-dev/misskey/commit/dc77d59f8712d3fe0b73cd4af2035133839cd57b
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Hyperlink: https://github.com/misskey-dev/misskey/security/advisories/GHSA-496g-mmpw-j9x3
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Vendor Advisory
Change History
0Changes found
Details not found