CVE-2026-52807

Gogs is an open source self-hosted Git service. Prior to 0.14.3, in new_form.tmpl, milestone names are rendered with Go's default auto-escaping ({{.Name}}), which converts < to < etc. This prevents direct HTML injection. However, when the browser renders the DOM, the text content of the element contains the decoded original payload. Semantic UI 2.4.2's dropdown component has preserveHTML: true as the default setting. When a user selects a dropdown item, the internal set.text() method calls jQuery's .html() with the item's text content. This re-parses the decoded text as HTML, creating the injected element and triggering the JavaScript event handler. An attacker can store an HTML/JavaScript payload in a milestone name, and when any user opens the New Issue page and interacts with the milestone dropdown, the payload executes in their browser via Semantic UI's preserveHTML behavior. This vulnerability is fixed in 0.14.3.

CVSS

No CVSS.

References

Link	Resource
https://github.com/gogs/gogs/commit/573eacdc658641487f8ad883da96b29ec8e2852d
https://github.com/gogs/gogs/pull/8325
https://github.com/gogs/gogs/releases/tag/v0.14.3
https://github.com/gogs/gogs/security/advisories/GHSA-vcm5-gvmp-78mp
https://github.com/gogs/gogs/security/advisories/GHSA-vcm5-gvmp-78mp

Configurations

No configuration.

History

25 Jun 2026, 16:16

Type	Values Removed	Values Added
References	~~() https://github.com/gogs/gogs/security/advisories/GHSA-vcm5-gvmp-78mp -~~	() https://github.com/gogs/gogs/security/advisories/GHSA-vcm5-gvmp-78mp -

24 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-24 21:16

Updated : 2026-06-25 16:16

NVD link : CVE-2026-52807

Mitre link : CVE-2026-52807

CVE.ORG link : CVE-2026-52807

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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