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 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 products
- Gogs, Notebookjs
- CVSS 3.1
- 8.9 HIGH
- EPSS
- 0.4% (36th percentile)
- Weakness
- CWE-79
- NVD status
- Deferred
- Published
- 2026-06-24
No indexed exploits for CVE-2026-52798 yet
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