aiohttp Cross-site Scripting vulnerability on index pages for static file handling
### Summary A XSS vulnerability exists on index pages for static file handling. ### Details When using `web.static(..., show_index=True)`, the resulting index pages do not escape file names. If users can upload files with arbitrary filenames to the static directory, the server is vulnerable to XSS attacks. ### Workaround We have always recommended using a reverse proxy server (e.g. nginx) for serving static files. Users following the recommendation are unaffected. Other users can disable `show_index` if unable to upgrade. ----- Patch: https://github.com/aio-libs/aiohttp/pull/8319/files
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-27306US | — | — | ||
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. A XSS vulnerability exists on index pages for static file handling. This vulnerability is fixed in 3… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/advisories/GHSA-7gpw-8wmc-pm8gADVISORY
- https://github.com/aio-libs/aiohttpPACKAGE
- https://github.com/aio-libs/aiohttp/commit/28335525d1eac015a7e7584137678cbb6ff19397WEB
- https://github.com/aio-libs/aiohttp/pull/8319WEB
- https://github.com/aio-libs/aiohttp/pull/8319/filesWEB
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-7gpw-8wmc-pm8gWEB
- https://lists.debian.org/debian-lts-announce/2025/02/msg00002.htmlWEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2EXRGTN2WG7VZLUZ7WOXU5GQJKCPPHKPWEB
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