CVE-2025-66512

Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud

CVSS 5.4 MEDIUMEPSS 0.2%CWE-80

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Produtos afetados

nextcloud · security-advisories

Quer saber se a sua infraestrutura está exposta a isto?

Falar com a TrueHacking →

Referências

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5 https://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63 https://github.com/nextcloud/viewer/pull/3023 https://hackerone.com/reports/3357808