High
Misskey allows the impersonation and takeover of remote accounts with unnormalized signed activities
Type: advisorySources: OSV
Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-32983
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 05:41 UTC · Revision 1
Source evidence
Misskey allows the impersonation and takeover of remote accounts with unnormalized signed activities
core-osv · Original sourcePublished 3 Jun 2024, 15:16 UTC
Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.
osv:CVE-2024-32983
Complete source record
{
"id": "64fc2526ee9ceb585be45bfc2abd4f254a34a59a332a815227c8997683e7b7a1",
"url": "https://osv.dev/vulnerability/CVE-2024-32983",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Misskey allows the impersonation and takeover of remote accounts with unnormalized signed activities",
"summary": "Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.",
"evidence": "osv:CVE-2024-32983",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2024-32983",
"aliases": [
"CVE-2024-32983",
"GHSA-2vxv-pv3m-3wvj"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/misskey-dev/misskey",
"type": "GIT",
"events": [
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{
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"source": "CPE_RANGE"
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"database_specific": {
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],
"modified": "2026-10-28T02:30:26.448520638Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/32xxx/CVE-2024-32983.json",
"https://github.com/misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvj",
"https://nvd.nist.gov/vuln/detail/CVE-2024-32983",
"https://github.com/misskey-dev/misskey/commit/d2a5bb39e344fcb84a24ae60faafe4694b227b88"
],
"provider_metadata": {
"cwe_ids": [
"CWE-863"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/32xxx/CVE-2024-32983.json"
}
},
"related_cves": [
{
"value": "CVE-2024-32983",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492789,
"published_at": "2024-06-03T15:16:26.186+00:00"
}