CVE-2026-52798

{"id": "CVE-2026-52798", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52798", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-25T17:14:47.335180Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.9, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "gogs", "product": "gogs", "versions": [{"status": "affected", "version": "< 0.14.3"}]}]}], "published": "2026-06-24T21:16:55.533", "references": [{"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": "security-advisories@github.com"}, {"url": "https://github.com/gogs/gogs/security/advisories/GHSA-jq8v-rmf6-65jw", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "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."}], "lastModified": "2026-06-25T18:16:39.817", "sourceIdentifier": "security-advisories@github.com"}