{"answers":{"affected":"3 open source packages ship an affected version, including gogs.io/gogs.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52798 exists.","fix":"Upgrade gogs.io/gogs to 0.14.3 or later.","what":"CVE-2026-52798 is a high-severity cross-site scripting vulnerability in gogs, published on 24 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-52798 and fix it if it is affected.\n\nWhat it is: CVE-2026-52798 is a high-severity cross-site scripting vulnerability in gogs, published on 24 Jun 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52798 exists.\n\nAffected packages and fixed versions:\n- gogs.io/gogs (Go): affected all versions; no fix listed\n- gogs.io/gogs (Go): affected all versions; fixed in 0.14.3\n- gogs.io/gogs (Go): affected all versions; fixed in 0.14.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-52798/ (Markdown: https://insights.sbomify.com/CVE-2026-52798/index.md)","id":"CVE-2026-52798","markdown":"https://insights.sbomify.com/CVE-2026-52798/index.md","name":"CVE-2026-52798","record":{"aliases":["GHSA-jq8v-rmf6-65jw","GO-2026-5477"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Self-hosted Git service","requires_auth":"low_privilege","summary":"Attackers can execute arbitrary JavaScript in the victim's browser by crafting malicious .ipynb files, potentially leading to account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.9,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Gogs: Stored XSS in `.ipynb` Preview","id":"CVE-2026-52798","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Gogs: Missing Authorization in Attachment Download","id":"CVE-2026-52799"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"gogs.io/gogs","purl":"pkg:golang/gogs.io/gogs","source":"GO-2026-5477"},{"ecosystem":"Go","fixed":["0.14.3"],"introduced":["0"],"last_affected":[],"package":"gogs.io/gogs","purl":null,"source":"GHSA-jq8v-rmf6-65jw"},{"ecosystem":"Go","fixed":["0.14.3"],"introduced":["0"],"last_affected":[],"package":"gogs.io/gogs","purl":"pkg:golang/gogs.io/gogs","source":"GHSA-jq8v-rmf6-65jw"}],"prev":{"headline":"Gogs: Overwriting critical files results in a denial of service","id":"CVE-2026-52797"},"products":["gogs"],"published":"2026-06-24","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-25","vendors":["gogs"]},"summary":"Attackers can execute arbitrary JavaScript in the victim's browser by crafting malicious .ipynb files, potentially leading to account takeover.","url":"https://insights.sbomify.com/CVE-2026-52798/"}