CVE-2026-52798

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{"affected": [{"affectedData": [{"product": "gogs", "vendor": "gogs", "versions": [{"status": "affected", "version": "< 0.14.3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Gogs is an open source self-hosted Git service. Prior to 0.14.3, although .ipynb previews are sanitized on the server side via /-/api/sanitize_ipynb, the inserted content is re-rendered on the client side without sanitization using marked() on elements with the .nb-markdown-cell class. During this process, links containing schemes such as javascript: can be regenerated. As a result, when a victim views an attacker-crafted .ipynb file and clicks the link, arbitrary JavaScript is executed in the Gogs origin, leading to a click-based Stored XSS. This vulnerability is fixed in 0.14.3."}], "id": "CVE-2026-52798", "lastModified": "2026-06-25T18:16:39.817", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.9, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52798", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-25T17:14:47.335180Z", "version": "2.0.3"}}]}, "published": "2026-06-24T21:16:55.533", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/commit/17b168b11ca759a7550e1f4bbd68bbde14db7785"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/pull/8319"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/releases/tag/v0.14.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/security/advisories/GHSA-jq8v-rmf6-65jw"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/gogs/gogs/security/advisories/GHSA-jq8v-rmf6-65jw"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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