CVE Explorer
CVE-2026-57575
Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a Server-Side Request Forgery (SSRF) vulnerability in URL preview functionality in UrlPreviewService. Due to missing network restrictions before establishing outbound connections, a remote attacker can cause the Misskey server to initiate HTTP requests to loopback, private, or link-local services. Because IP address validation takes place after the request has been sent and the process is subsequently
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"misskey","vendor":"misskey-dev","versions":[{"status":"affected","version":"< 2026.6.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /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":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/misskey-dev/misskey/commit/1eac4ccf513a067b9f7b7d123057c09a389fccee","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/commit/1eac4ccf513a067b9f7b7d123057c09a389fccee"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /containers/cna/references/1
{"name":"https://github.com/misskey-dev/misskey/releases/tag/2026.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/misskey-dev/misskey/releases/tag/2026.6.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /containers/cna/references/2
{"name":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-jvcx-f39m-5xrj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/misskey-dev/misskey/security/advisories/GHSA-jvcx-f39m-5xrj"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5000af3f52e1a8d6e1c5c6ff4dc38e01393a6402d63a08b2ab77f4028468614d · sha256:6435329c5efe00d7… · /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.