High severity · published Jul 3, 2026
CVE-2026-28737
Gitea 3D file viewer allows stored XSS through glTF extensionsRequired
8.7
CVSS
0.4%
EPSS
No
On KEV
Description
Gitea versions from 1.25.0 before 1.26.0 allow stored cross-site scripting through the extensionsRequired field in glTF files rendered by the 3D file viewer.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
Gitea Open Source Git Server · Gitea
1.25.0 before 1.26.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28737
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28737
blog.gitea.com
https://blog.gitea.com/release-of-1.26.0/
github.com
https://github.com/go-gitea/gitea/pull/37233
github.com
https://github.com/go-gitea/gitea/releases/tag/v1.26.0
github.com
https://github.com/go-gitea/gitea/security/advisories/GHSA-9cpj-qc93-vw8v
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