CVE-2026-34513
2 advisories.
PyPI/aiohttp CVE-2026-34513: low
AIOHTTP Affected by Denial of Service (DoS) via Unbounded DNS Cache in TCPConnector
Action: Upgrade aiohttp to 3.13.4 or later.
pip install aiohttp==3.13.4Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.13.4 | - |
Fixed versions
| 3.13.4 |
Sources
- osv: GHSA-hcc4-c3v8-rx92
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hcc4-c3v8-rx92
- https://nvd.nist.gov/vuln/detail/CVE-2026-34513
- https://github.com/aio-libs/aiohttp/commit/c4d77c3533122be353b8afca8e8675e3b4cbda98
- https://github.com/aio-libs/aiohttp
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
CVE-2026-34513 · published · modified · JSON
PyPI/aiohttp CVE-2026-34513: high 7.5
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situa
Action: Upgrade aiohttp to 3.13.4 or later.
pip install aiohttp==3.13.4Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.13.4 | - |
Fixed versions
| 3.13.4 |
Sources
- osv: PYSEC-2026-2095
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
- https://github.com/aio-libs/aiohttp/commit/c4d77c3533122be353b8afca8e8675e3b4cbda98
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hcc4-c3v8-rx92
CVE-2026-34513 · published · modified · JSON