Gogs: DoS in rendering issue index pattern_CVE-2026-52796

3.5 / 10

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Description

Gogs is an open source self-hosted Git service. Prior to 0.14.3, specially crafted issue index pattern can cause a panic when rendering, resulting in denial of service. In internal/markup/markup.go, RenderIssueIndexPattern renders the issue index pattern to a link using com.Expand, which is not safe: when the configured pattern contains an opening brace { but no closing brace }, strings.Index(template, "}") returns -1 and the subsequent slice template[:-1] triggers a panic. Once such a pattern is set, any page in the affected repository that contains an issue index reference such as #1 becomes unavailable. This vulnerability is fixed in 0.14.3.

Basic Information

ID CVE-2026-52796

Source GitHub_M

Published Jun 24, 2026 at 20:13

Affected Product

Vendor gogs

Product gogs

Version < 0.14.3

Affected Versions gogs gogs < 0.14.3

CWE Classification

CWE-1336

References

github.com /gogs/gogs/security/advisories/GHSA-4j89-2c4f-44c6

{
    "lastseen": "",
    "description": "Gogs is an open source self-hosted Git service. Prior to 0.14.3, specially crafted issue index pattern can cause a panic when rendering, resulting in denial of service. In internal/markup/markup.go, RenderIssueIndexPattern renders the issue index pattern to a link using com.Expand, which is not safe: when the configured pattern contains an opening brace { but no closing brace }, strings.Index(template, \"}\") returns -1 and the subsequent slice template[:-1] triggers a panic. Once such a pattern is set, any page in the affected repository that contains an issue index reference such as #1 becomes unavailable. This vulnerability is fixed in 0.14.3.",
    "published": "2026-06-24T20:13:11.884Z",
    "modified": "2026-06-24T20:13:11.884Z",
    "type": "cve",
    "title": "Gogs: DoS in rendering issue index pattern",
    "source": "GitHub_M",
    "references": "https://github.com/gogs/gogs/security/advisories/GHSA-4j89-2c4f-44c6",
    "id": "CVE-2026-52796",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1336"
    ],
    "cvelist": null,
    "sourceData": "gogs gogs < 0.14.3",
    "sourceHref": "",
    "cvss": {
        "score": 3.5,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "gogs",
    "version": "< 0.14.3",
    "vendor": "gogs",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}