7.5

CVE-2024-52304: aiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensions

Modified
AliasesSUSE-SU-2024:4077-1SUSE-SU-2024:4110-1GHSA-8495-4g3g-x7pr
Published 18-11-2024Last modified 03-11-2025

Vulnerability summary

CVE-2024-52304 is a high (CVSS 7.5) vulnerability in aio-libs aiohttp. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 46.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.56%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 6
DLA-4041-1DSA-5828-1MGASA-2024-0388RHSA-2024:10766RHSA-2025:0340USN-7642-1

Timeline

  1. 18-11-2024
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.11, the Python parser parses newlines in chunk extensions incorrectly which can lead to request smuggling vulnerabilities under certain conditions. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or `AIOHTTP_NO_EXTENSIONS` is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.10.11 fixes the issue.

CVSS metrics

10 scores · 8 sources · 2 versions

EPSS trend

Probability

0.56%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.56% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard22 products
  • airflow< 2.10.3-r2
  • airflow-bitnami-compat< 2.10.3-r2
  • awx< 24.6.1-r2
  • checkov< 3.2.432-r0
  • dask-gateway< 2024.1.0-r11
Wolfi18 products
  • airflow< 2.10.3-r2
  • airflow-bitnami-compat< 2.10.3-r2
  • checkov< 3.2.432-r0
  • dask-gateway< 2024.1.0-r11
  • dask-gateway-server< 2024.1.0-r11
Suse7 products
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 3.6.0-150100.3.18.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP3< 3.6.0-150100.3.18.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP4< 3.9.3-150400.10.27.1 | < 3.6.0-150100.3.18.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP5< 3.6.0-150100.3.18.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP6< 3.6.0-150100.3.18.1
Redhat4 products
  • python-aiohttp< 0:3.10.11-1.el8pc | < 0:3.10.11-1.el9pc
  • python-aiohttp-debugsource< 0:3.10.11-1.el8pc | < 0:3.10.11-1.el9pc
  • python3.11-aiohttp< 0:3.10.11-1.el8pc | < 0:3.10.11-1.el9pc
  • python3.11-aiohttp-debuginfo< 0:3.10.11-1.el8pc | < 0:3.10.11-1.el9pc
Opensuse2 products
  • python-aiohttp&distro=openSUSE Leap 15.5< 3.9.3-150400.10.27.1 | < 3.6.0-150100.3.18.1
  • python-aiohttp&distro=openSUSE Leap 15.6< 3.9.3-150400.10.27.1
Aio-libs1 product
Aiohttp1 product
Debian1 product
  • python-aiohttp< 3.8.4-1+deb12u1 | < 3.10.11-1
PyPI1 product
  • aiohttp< 3.10.11
Ubuntu1 product
  • python-aiohttp< 3.0.1-1ubuntu0.1~esm5 | < 3.8.1-4ubuntu0.2+esm1 | < 3.9.1-1ubuntu0.1+esm1

10 vendors · 58 products

References

38 links
Show all 38 references