CVE catalog
CVE-2024-52303
python-aiohttp: CVE-2024-52303
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.59% · Oct 25, 2026
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions starting with 3.10.6 and prior to 3.10.11, a memory leak can occur when a request produces a MatchInfoError. This was caused by adding an entry to a cache on each request, due to the building of each MatchInfoError producing a unique cache entry. An attacker may be able to exhaust the memory resources of a server by sending a substantial number (100,000s to millions) of such requests. Those who use any middlewares with aiohttp.web should upgrade to version 3.10.11 to receive a patch.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-aiohttp | sid | 3.14.3-1 | fixed |
| Debian | python-aiohttp | forky | 3.14.3-1 | fixed |
| Debian | python-aiohttp | trixie | 3.11.16-1+deb13u1 | fixed |
| Debian | python-aiohttp | trixie-security | 3.11.16-1+deb13u1 | fixed |
| Debian | python-aiohttp | bookworm | 3.8.4-1+deb12u1 | not affected |
| Debian | python-aiohttp | bookworm-security | 3.8.4-1+deb12u1 | not affected |
| Opensuse | python-aiohttp | tumbleweed | 3.11.9-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-aiohttp | source | sid | 3.10.11-1 | not yet assigned | Not reported | [1088108] |
| Debian | python-aiohttp | source | forky | 3.10.11-1 | not yet assigned | Not reported | [1088108] |
| Debian | python-aiohttp | source | trixie | 3.10.11-1 | not yet assigned | Not reported | [1088108] |
| Debian | python-aiohttp | source | bookworm | Not affected | unimportant | Not reported | [1088108] |
| Opensuse | python-aiohttp | rpm | tumbleweed | 3.11.9-1.1 | Not reported | OPENSUSE-SU-2024:14556-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [python313-aiohttp]Unknown
Source package: [python-aiohttp]
Details (1)
3.14.3-1.1· x86_64 · tumbleweedUnknown · Fixed:
3.11.9-1.1Version impact unknown
dsa · python-aiohttp · opensuse · tumbleweed
- [python314-aiohttp]Unknown
Source package: [python-aiohttp]
Details (1)
3.14.3-1.1· x86_64 · tumbleweedUnknown · Fixed:
3.11.9-1.1Version impact unknown
dsa · python-aiohttp · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [python3-aiohttp]Not affected
Source package: [python-aiohttp]
Details (4)
3.8.4-1+deb12u1· amd64 · bookwormNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· arm64 · bookwormNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· amd64 · bookworm-securityNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· arm64 · bookworm-securityNot affected
dsa · python-aiohttp · debian · bookworm
- [python-aiohttp-doc]Not affected
Source package: [python-aiohttp]
Details (4)
3.8.4-1+deb12u1· all · bookwormNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· all · bookwormNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· all · bookworm-securityNot affected
dsa · python-aiohttp · debian · bookworm
3.8.4-1+deb12u1· all · bookworm-securityNot affected
dsa · python-aiohttp · debian · bookworm
[Debian 13 (Trixie)]
- [python3-aiohttp]Fixed
Source package: [python-aiohttp]
Details (4)
3.11.16-1+deb13u1· amd64 · trixieFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· arm64 · trixieFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
- [python-aiohttp-doc]Fixed
Source package: [python-aiohttp]
Details (4)
3.11.16-1+deb13u1· all · trixieFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· all · trixieFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· all · trixie-securityFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
3.11.16-1+deb13u1· all · trixie-securityFixed · Fixed:
3.10.11-1dsa · python-aiohttp · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_14556-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-52303]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2024-52303]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:14556-1]
- [https://security-tracker.debian.org/tracker/CVE-2024-52303]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-52303.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0823.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]