Misskey: JSON-LD signature validation + compaction may lead to improper activity handling
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| misskey-dev | misskey | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Misskey | Misskey |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.280% probability within 30 days)
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| First Time appeared |
Misskey
Misskey misskey |
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| Vendors & Products |
Misskey
Misskey misskey |
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| Metrics |
ssvc
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| Description | Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, contain a vulnerability in the JSON-LD signature validation and compaction process that allows spoofed activities to be accepted as valid. This issue has been fixed in version 2026.5.4. | |
| Title | Misskey: JSON-LD signature validation + compaction may lead to improper activity handling | |
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
cvssV4_0
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