CVE-2025-69223
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductAiohttp
PublishedJan 5, 2026
First seenJan 5, 2026
How to fix
Update
- aiohttp aiohttp3.13.3 or later
- aiohttp3.13.3 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:1497
- access.redhat.com/errata/RHSA-2026:1506
- access.redhat.com/errata/RHSA-2026:3959
- access.redhat.com/errata/RHSA-2026:1249
- access.redhat.com/errata/RHSA-2026:3958
- access.redhat.com/errata/RHSA-2026:61628
- access.redhat.com/errata/RHSA-2026:3461
- access.redhat.com/errata/RHSA-2026:3462
- access.redhat.com/errata/RHSA-2026:1599
- access.redhat.com/errata/RHSA-2026:1609
- access.redhat.com/errata/RHSA-2026:6308
- access.redhat.com/errata/RHSA-2026:59159
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| aiohttp aiohttp | v < 3.13.3 | 3.13.3 |
| aiohttpPyPI | v < 3.13.3 | 3.13.3 |
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