Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a zip bomb to be used to execute a DoS against the AIOHTTP server. An attacker may be able to send a compressed request that when decompressed by AIOHTTP could exhaust the host's memory. This issue is fixed in version 3.13.3.
Affected products
aiohttp: aiohttp
References10
- github.com/aio-libs/aiohttp/security/advisories/GHSA-6mq8-rvhq-… PatchVendor Advisory
- github.com/aio-libs/aiohttp/commit/2b920c39002cee0ec5b402581779… Patch
- access.redhat.com/errata/RHSA-2026:10184
- access.redhat.com/errata/RHSA-2026:1249
- access.redhat.com/errata/RHSA-2026:1497
- access.redhat.com/errata/RHSA-2026:1506
- access.redhat.com/errata/RHSA-2026:1596
- access.redhat.com/errata/RHSA-2026:1599
- access.redhat.com/errata/RHSA-2026:1609
- access.redhat.com/errata/RHSA-2026:19712
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 48 · as of 11 November 2026
- CWE
- CWE-409CWE-770
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.