CVE Explorer

CVE-2026-48115

Misskey is an open source, federated social media platform. All Misskey servers running versions 2024.5.0 and later, but prior to 2026.5.4, contain a vulnerability in the Server Announcements API where insufficient permission checks allow attackers to access limited portions of data that they normally couldn't view. This vulnerability occurs whether or not federation is enabled. This issue has been fixed in version 2026.5.4.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ee9cddf72d21b269b9cc05031bf7556129a08c09c9116ffd0be53f854d638bb5

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"misskey","vendor":"misskey-dev","versions":[{"status":"affected","version":">= 2024.5.0, < 2026.5.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:50f1e29e9e98c7e51d77866bdd39f63320915d9fc4517b1f5d30385f93bcce09 · sha256:679af72b9ed8ac78… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:50f1e29e9e98c7e51d77866bdd39f63320915d9fc4517b1f5d30385f93bcce09 · sha256:679af72b9ed8ac78… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-285","description":"CWE-285: Improper Authorization","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:50f1e29e9e98c7e51d77866bdd39f63320915d9fc4517b1f5d30385f93bcce09 · sha256:679af72b9ed8ac78… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/misskey-dev/misskey/releases/tag/2026.5.4","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/releases/tag/2026.5.4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:50f1e29e9e98c7e51d77866bdd39f63320915d9fc4517b1f5d30385f93bcce09 · sha256:679af72b9ed8ac78… · /containers/cna/references/1

{"name":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-j49q-76hx-mv8f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-j49q-76hx-mv8f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:50f1e29e9e98c7e51d77866bdd39f63320915d9fc4517b1f5d30385f93bcce09 · sha256:679af72b9ed8ac78… · /containers/cna/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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