6.5

CVE-2025-66482

Exploit

Misskey has a login rate limit bypass via spoofed X-Forwarded-For header

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Misskey ≫ Misskey Version >= 13.1.0 < 2025.12.0
Misskey ≫ Misskey Version 13.0.0 Update -
Misskey ≫ Misskey Version 13.0.0 Update beta16
Misskey ≫ Misskey Version 13.0.0 Update beta21
Misskey ≫ Misskey Version 13.0.0 Update beta22
Misskey ≫ Misskey Version 13.0.0 Update beta23
Misskey ≫ Misskey Version 13.0.0 Update beta24
Misskey ≫ Misskey Version 13.0.0 Update beta25
Misskey ≫ Misskey Version 13.0.0 Update beta26
Misskey ≫ Misskey Version 13.0.0 Update beta27
Misskey ≫ Misskey Version 13.0.0 Update beta28
Misskey ≫ Misskey Version 13.0.0 Update beta29
Misskey ≫ Misskey Version 13.0.0 Update beta30
Misskey ≫ Misskey Version 13.0.0 Update beta31
Misskey ≫ Misskey Version 13.0.0 Update beta32
Misskey ≫ Misskey Version 13.0.0 Update beta33
Misskey ≫ Misskey Version 13.0.0 Update beta34
Misskey ≫ Misskey Version 13.0.0 Update beta35
Misskey ≫ Misskey Version 13.0.0 Update beta36
Misskey ≫ Misskey Version 13.0.0 Update beta37
Misskey ≫ Misskey Version 13.0.0 Update beta38
Misskey ≫ Misskey Version 13.0.0 Update beta39
Misskey ≫ Misskey Version 13.0.0 Update beta40
Misskey ≫ Misskey Version 13.0.0 Update beta41
Misskey ≫ Misskey Version 13.0.0 Update beta42
Misskey ≫ Misskey Version 13.0.0 Update beta43
Misskey ≫ Misskey Version 13.0.0 Update rc1
Misskey ≫ Misskey Version 13.0.0 Update rc10
Misskey ≫ Misskey Version 13.0.0 Update rc11
Misskey ≫ Misskey Version 13.0.0 Update rc2
Misskey ≫ Misskey Version 13.0.0 Update rc3
Misskey ≫ Misskey Version 13.0.0 Update rc4
Misskey ≫ Misskey Version 13.0.0 Update rc5
Misskey ≫ Misskey Version 13.0.0 Update rc6
Misskey ≫ Misskey Version 13.0.0 Update rc7
Misskey ≫ Misskey Version 13.0.0 Update rc8
Misskey ≫ Misskey Version 13.0.0 Update rc9
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.33% 0.258
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 3.9 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
security-advisories@github.com 6.9 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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
CWE-1188 Initialization of a Resource with an Insecure Default

The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.

CWE-307 Improper Restriction of Excessive Authentication Attempts

The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm
Vendor Advisory
Exploit
https://github.com/misskey-dev/misskey/commit/5512898463fa8487b9e6488912f35102b91f25f7
Patch