Back to overview

CVE-2026-52798

HIGH
8.9
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-52798
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-08 18:02 UTC
Published
2026-06-24 20:14 UTC
Last updated
2026-06-24 20:14 UTC
Primary CWE
CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product
gogs / gogs
Sources
cve.org  ·  NVD

Severity & Metrics

8.9 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Affected products (1)
VendorProductPlatformVersions
gogs gogs — < 0.14.3
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.9 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
References (4)
Back to overview