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CVE-2025-66482

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:51fa2a1675b0443f0b486fe9ebf9e459a929d6baa760ff270a2c835367f0cd2c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-1188","description":"CWE-1188: Insecure Default Initialization of Resource","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-307","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"misskey","vendor":"misskey-dev","versions":[{"status":"affected","version":">= 2025.9.1, < 2025.12.0-alpha.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-1188","description":"CWE-1188: Insecure Default Initialization of Resource","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-307","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/misskey-dev/misskey/commit/5512898463fa8487b9e6488912f35102b91f25f7","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/commit/5512898463fa8487b9e6488912f35102b91f25f7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/references/1
{"name":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-wwrj-3hvj-prpm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d7a77e0306b80a5671a4f646cd47cb0fc84377c13ccd5e3e94a071b3b518d2fa · sha256:b187e502a109d1e4… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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