high8.9
CVE-2026-52798
Gogs is an open source self-hosted Git service.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | gogs.io/gogs | <= 0.14.2 | 0.14.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-jq8v-rmf6-65jw
- https://github.com/gogs/gogs/security/advisories/GHSA-jq8v-rmf6-65jw
- https://github.com/gogs/gogs/pull/8319
- https://github.com/gogs/gogs/commit/17b168b11ca759a7550e1f4bbd68bbde14db7785
- https://github.com/gogs/gogs/releases/tag/v0.14.3
- https://nvd.nist.gov/vuln/detail/CVE-2026-52798