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2.4 KiB
JSON
1 line
2.4 KiB
JSON
{"schema_version":"1.9.0","id":"GHSA-4j89-2c4f-44c6","published":"2026-06-22T23:58:17Z","modified":"2026-07-21T13:30:31.792639325Z","aliases":["CVE-2026-52796","GO-2026-5124"],"summary":"Gogs has DoS in rendering issue index pattern","details":"### Summary\nSpecial template of issue index pattern may cause panic.\n\n### Details\n\nin internal/markup/markup.go\n\n```go\nlink = fmt.Sprintf(`<a href=\"%s\">%s</a>`, com.Expand(metas[\"format\"], metas), m)\n```\n\nIssue index pattern is rendered to link with `com.Expand`.\n\nHowever, `com.Expand` is not safe.\n\n```go\ni = strings.Index(template, \"}\")\nif s, ok := match[template[:i]]; ok {\n```\n\nwhen `{` is found but `}` not found, i comes to 1, template[:-1] will be called, and then panicked\n\n\n\nfinally, all pages than contains issue index are unavailable.\n\n### PoC\n\n1. set issue index pattern as follow\n\n\n\n2. add a commit which point to an issue in its msg\n\n\n\nusing `#1` above\n\n### Impact\n\nDoS that cause part of pages of the specify repo unavailable.","affected":[{"package":{"name":"gogs.io/gogs","ecosystem":"Go","purl":"pkg:golang/gogs.io/gogs"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.14.3"}]}],"database_specific":{"last_known_affected_version_range":"<= 0.14.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-4j89-2c4f-44c6/GHSA-4j89-2c4f-44c6.json"}}],"references":[{"type":"WEB","url":"https://github.com/gogs/gogs/security/advisories/GHSA-4j89-2c4f-44c6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52796"},{"type":"WEB","url":"https://github.com/gogs/gogs/pull/8312"},{"type":"WEB","url":"https://github.com/gogs/gogs/commit/0529d95fc39f2b6d2997b19a2a12e24522684722"},{"type":"PACKAGE","url":"https://github.com/gogs/gogs"},{"type":"WEB","url":"https://github.com/gogs/gogs/releases/tag/v0.14.3"}],"database_specific":{"cwe_ids":["CWE-1336"],"github_reviewed":true,"github_reviewed_at":"2026-06-22T23:58:17Z","nvd_published_at":"2026-06-24T21:16:55Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"}]} |