Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.x branch prior to versions 4.0.10, 4.2.8, and 4.2.0-rc2, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to execute in the browser. The impact is limited thanks to Mastodon's strict Content Security Policy, blocking inline scripts, etc. However a CSP bypass or loophole could be exploited to execute malicious XSS. Furthermore, it requires user interaction, as this can only occur upon clicking the “Translate” button on a malicious post. Versions 4.0.10, 4.2.8, and 4.2.0-rc2 contain a patch for this issue.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-09-19T15:58:44.559Z
Updated: 2024-08-02T19:23:38.536Z
Reserved: 2023-09-08T20:57:45.573Z
Link: CVE-2023-42452
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2023-09-19T16:15:13.630
Modified: 2023-09-22T17:12:47.737
Link: CVE-2023-42452
Redhat
No data.