CVE-2023-25154
mediumpriority · track · 24EPSS 0.004 · 37 %ileEUUSEPSS · scored 2026-10-28
Misskey is an open source, decentralized social media platform. In versions prior to 13.5.0 the link to the instance to the sender that appears when viewing a user or note received through ActivityPub is not properly validated, so by inserting a URL with a javascript scheme an attacker may execute JavaScript code in the context of the recipient. This issue has been fixed in version 13.5.0. Users are advised to upgrade. Users unable to upgrade should not "view on remote" for untrusted instances.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.6–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-25154/cnnvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-pfp5-r48x-fg25cnnvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-pfp5-r48x-fg25enisa_euvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-pfp5-r48x-fg25Vendor Advisorynvd
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