CVE-2026-52798: Gogs is an open source self-hosted Git service. Prior to 0.14.3, although .ipynb previews are sanitized on the server side via /-/api/sanitize_ipynb, the…

PriorityP351high8.9CVSS 3.1

AVNACLPRLUIRSCCHIHAL

EPSS

0.43%

34.4th percentile

Gogs is an open source self-hosted Git service. Prior to 0.14.3, although .ipynb previews are sanitized on the server side via /-/api/sanitize_ipynb, the inserted content is re-rendered on the client side without sanitization using marked() on elements with the .nb-markdown-cell class. During this process, links containing schemes such as javascript: can be regenerated. As a result, when a victim views an attacker-crafted .ipynb file and clicks the link, arbitrary JavaScript is executed in the Gogs origin, leading to a click-based Stored XSS. This vulnerability is fixed in 0.14.3.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
gogs.io	gogs	>= 0 < 0.14.3	0.14.3
gogs	gogs	< 0.14.3	0.14.3

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