{"id":"CVE-2025-47943","aliases":["GHSA-xh32-cx6c-cp4v","GO-2025-3778"],"url":"https://o3.security/vulnerability/CVE-2025-47943","summary":"Gogs stored XSS in PDF renderer","details":"### Summary\n\nA stored XSS is present in Gogs which allows client-side Javascript code execution.\n\n### Details\n\nGogs Version:\n```\ndocker images\nREPOSITORY   TAG       IMAGE ID       CREATED        SIZE\ngogs/gogs    latest    fe92583bc4fe   10 hours ago   99.3MB\n```\n\nApplication version: `0.14.0+dev`\n\nLocal setup using:\n```bash\n# Pull image from Docker Hub.\ndocker pull gogs/gogs\n\n# Create local directory for volume.\nsudo mkdir -p /var/gogs\n\n# Use `docker run` for the first time.\ndocker run --name=gogs -p 10022:22 -p 10880:3000 -v /var/gogs:/data gogs/gogs\n```\n\nThe vulnerability is caused by the usage of a vulnerable and outdated component: `pdfjs-1.4.20` under public/plugins/.  \nRead more about this vulnerability at [codeanlabs - CVE-2024-4367](https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/).\n\n### PoC\n\n1. Upload the Proof of Concept file hosted at https://codeanlabs.com/wp-content/uploads/2024/05/poc_generalized_CVE-2024-4367.pdf in a repository.\n2. Click on the file to be previewed.\n\n![poc](https://github.com/user-attachments/assets/5af1303e-8751-49c8-af2e-d0631dd18957)\n\n\n### Credits\n\nEdoardo Ottavianelli","published":"2025-06-24T03:48:06.012Z","modified":"2026-08-12T03:51:20.649249098Z","cvss":{"score":6.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N"},"epss":{"score":0.00309,"percentile":0.23593,"asOf":"2026-08-19"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/gogs/gogs","fixedVersion":"0.13.3-0.20250608224432-110117b2e5e5"},{"ecosystem":"Go","name":"gogs.io/gogs","fixedVersion":"0.13.3-0.20250608224432-110117b2e5e5"}],"fix":{"url":"https://github.com/gogs/gogs/commit/110117b2e5e5baa4809c819bec701e929d2d8d40","label":"gogs/gogs@110117b"},"references":[{"type":"WEB","url":"https://github.com/gogs/gogs/releases/tag/v0.13.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47943.json"},{"type":"ADVISORY","url":"https://github.com/gogs/gogs/security/advisories/GHSA-xh32-cx6c-cp4v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47943"},{"type":"FIX","url":"https://github.com/gogs/gogs/commit/110117b2e5e5baa4809c819bec701e929d2d8d40"},{"type":"ARTICLE","url":"https://www.hacktivesecurity.com/blog/2025/07/15/cve-2025-47943-stored-xss-in-gogs-via-pdf"},{"type":"PACKAGE","url":"https://github.com/gogs/gogs"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.649249098Z"}}