GHSA-4j89-2c4f-44c6
Suggest an improvement- Source
- https://github.com/advisories/GHSA-4j89-2c4f-44c6
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-4j89-2c4f-44c6/GHSA-4j89-2c4f-44c6.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-4j89-2c4f-44c6
- Aliases
-
- CVE-2026-52796
- Published
- 2026-06-22T23:58:17Z
- Modified
- 2026-06-23T00:15:07.128594046Z
- Severity
-
- 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- Gogs has DoS in rendering issue index pattern
- Details
-
Summary
Special template of issue index pattern may cause panic.
Details
in internal/markup/markup.go
link = fmt.Sprintf(`<a href="%s">%s</a>`, com.Expand(metas["format"], metas), m)Issue index pattern is rendered to link with
com.Expand.However,
com.Expandis not safe.i = strings.Index(template, "}") if s, ok := match[template[:i]]; ok {when
{is found but}not found, i comes to 1, template[:-1] will be called, and then panicked
finally, all pages than contains issue index are unavailable.
PoC
- set issue index pattern as follow
- add a commit which point to an issue in its msg
using
#1aboveImpact
DoS that cause part of pages of the specify repo unavailable.
- Database specific
{ "severity": "LOW", "cwe_ids": [ "CWE-1336" ], "github_reviewed": true, "github_reviewed_at": "2026-06-22T23:58:17Z", "nvd_published_at": null }- References
Affected packages
Go / gogs.io/gogs
Package
- Name
- gogs.io/gogs
- View open source insights on deps.dev
- Purl
- pkg:golang/gogs.io/gogs