7.5

CVE-2024-30251: Denial of service when trying to parse malformed POST requests in aiohttp

Modified
AliasesSUSE-SU-2024:4327-1SUSE-SU-2024:4328-1GHSA-5m98-qgg9-wh84
Published 02-05-2024Last modified 03-11-2025

Vulnerability summary

CVE-2024-30251 is a high (CVSS 7.5) Loop with Unreachable Exit Condition vulnerability in aio-libs aiohttp. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.09%
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 5 · Related 6
DLA-4041-1DSA-5828-1RHSA-2024:3781RHSA-2025:1335USN-7642-1CGA-2F4R-9FP6-P37C

Timeline

  1. 02-05-2024
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In affected versions an attacker can send a specially crafted POST (multipart/form-data) request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. An attacker can stop the application from serving requests after sending a single request. This issue has been addressed in version 3.9.4. Users are advised to upgrade. Users unable to upgrade may manually apply a patch to their systems. Please see the linked GHSA for instructions.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.09% 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.

Chainguard15 products
  • checkov< 3.0.34-r1
  • dask-gateway< 2024.1.0-r4
  • dask-gateway-server< 2024.1.0-r4
  • kserve< 0.13.1-r3
  • kserve-agent< 0.13.1-r3
Wolfi13 products
  • checkov< 3.0.34-r1
  • dask-gateway< 2024.1.0-r4
  • dask-gateway-server< 2024.1.0-r4
  • kserve< 0.13.1-r3
  • kserve-agent< 0.13.1-r3
Suse11 products
  • python-aiohttp&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 3.9.3-150400.10.30.1
  • python-aiohttp&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 3.9.3-150400.10.30.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 3.6.0-150100.3.21.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP3< 3.6.0-150100.3.21.1
  • python-aiohttp&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP4< 3.9.3-150400.10.30.1 | < 3.6.0-150100.3.21.1
Opensuse2 products
  • python-aiohttp&distro=openSUSE Leap 15.5< 3.9.3-150400.10.30.1 | < 3.6.0-150100.3.21.1
  • python-aiohttp&distro=openSUSE Leap 15.6< 3.9.3-150400.10.30.1
Aio-libs1 product
Aiohttp1 product
Debian1 product
  • python-aiohttp< 3.8.4-1+deb12u1 | < 3.9.5-1
PyPI1 product
  • aiohttp< 3.9.4
Ubuntu1 product
  • python-aiohttp< 3.8.1-4ubuntu0.2+esm1 | < 3.9.1-1ubuntu0.1+esm1

9 vendors · 46 products

References

20 links
Show all 20 references