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Misskey: Cross-site scripting in RSS feed item links

Type: advisorySource: Official CVE List1 source record

Misskey is an open source, federated social media platform. From 12.0.0 until 2026.7.0, the RSS components display feed item links from configured feeds without verifying their URL schemes. Missing URL scheme verification allows an attacker who controls feed content to provide an unsafe-scheme link that causes script execution when a user clicks it in an RSS widget. This issue is fixed in version 2026.7.0.

Announced Source revision 1
Original source ↗

CVE-2026-104816

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-104816

misskey

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "misskey-dev",
    "product": "misskey",
    "versions": [
      {
        "status": "affected",
        "version": ">= 12.0.0, <= 13.14.2"
      },
      {
        "status": "affected",
        "version": ">= 2023.9.0-beta.1, < 2026.7.0"
      }
    ]
  }
]
Related CVEs
CVE-2026-104816

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#20771 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement