CVE-2026-28737

High

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.

SeverityHigh

CVSS8.7

Exploit probability—

ProductCode.gitea.io/gitea

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

code.gitea.io/gitea1.26.0 or later

Patches

github.com/go-gitea/gitea/pull/37233

Vendor advisories

github.com/go-gitea/gitea/security/advisories/GHSA-9cpj-qc93-vw8v
github.com/go-gitea/gitea/releases/tag/v1.26.0
blog.gitea.com/release-of-1.26.0/

Affected products

Product	Affected versions	Fixed in
code.gitea.io/giteaGo	1.25.0 ≤ v < 1.26.0	1.26.0

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