CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2024-27306
Medium (6.1). EPSS 0.7% chance of exploitation in the next 30 days. Fixed in aiohttp 3.9.4.
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 3.9.4. 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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-79, CWE-80
- Published
- Modified
- Record from
- the NVD, synced
Affected
- aiohttp:aiohttp
- fedoraproject:fedora
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7gpw-8wmc-pm8g | PyPI | aiohttp | <3.9.4 | 3.9.4 |
| PYSEC-2026-1102 | PyPI | aiohttp | <3.9.4 | 3.9.4 |
References
- https://github.com/aio-libs/aiohttp/commit/28335525d1eac015a7e7584137678cbb6ff19397
- https://github.com/aio-libs/aiohttp/pull/8319
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-7gpw-8wmc-pm8g
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2EXRGTN2WG7VZLUZ7WOXU5GQJKCPPHKP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NWEI6NIHZ3G7DURDZVMRK7ZEFC2BTD3U/