Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option (`trustProxy`) has been added in config file to prevent this from happening. However, it is initialized with an insecure default value before version 2025.12.0-alpha.2, making it still vulnerable if the configuration is not set correctly. This is patched in v2025.12.0-alpha.2 by flipping default value of `trustProxy` to `false`. Users of a trusted reverse proxy who are unsure if they manually overode this value should check their config for optimal behavior. Users are running Misskey with a trusted reverse proxy should not be affected by this vulnerability. From v2025.9.1 to v2025.11.1, workaround is available. Set `trustProxy: false` in config file.
References
| Link | Resource |
|---|---|
| https://github.com/misskey-dev/misskey/commit/5512898463fa8487b9e6488912f35102b91f25f7 | Patch |
| https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm | Exploit Vendor Advisory |
| https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
06 Jan 2026, 19:41
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| First Time |
Misskey misskey
Misskey |
|
| References | () https://github.com/misskey-dev/misskey/commit/5512898463fa8487b9e6488912f35102b91f25f7 - Patch | |
| References | () https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc4:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta16:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:-:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta32:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta27:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc1:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta29:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta34:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta37:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta40:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc9:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc3:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta28:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta38:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc7:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta21:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta42:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta25:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta24:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta22:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta31:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc11:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta23:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc8:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta30:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta41:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc2:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta39:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta35:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta43:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc10:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc5:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta36:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta33:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:rc6:*:*:*:*:*:* cpe:2.3:a:misskey:misskey:13.0.0:beta26:*:*:*:*:*:* |
16 Dec 2025, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm - |
16 Dec 2025, 00:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-16 00:16
Updated : 2026-01-06 19:41
NVD link : CVE-2025-66482
Mitre link : CVE-2025-66482
CVE.ORG link : CVE-2025-66482
JSON object : View
Products Affected
misskey
- misskey