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NVD / CVE Program· CNA GitHub_M

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

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 65.9% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: aio-libs aiohttp 3.9.4.

Low priority for now. Upgrade to aio-libs aiohttp 3.9.4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
May 2, 2024
Updated
Jun 17, 2026
EPSS
1.0% · 65th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-30251

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
aiohttpaiohttp

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • aio-libs aiohttp

    • < 3.9.4affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • aiohttp aiohttpbefore 3.9.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11python-aiohttpbefore 3.7.4-1+deb11u13.7.4-1+deb11u1
Debian:12python-aiohttpbefore 3.8.4-1+deb12u13.8.4-1+deb12u1
Debian:13python-aiohttpbefore 3.9.5-13.9.5-1
openSUSE:Leap 15.5python-aiohttpbefore 3.9.3-150400.10.30.13.9.3-150400.10.30.1
openSUSE:Leap 15.5python-aiohttpbefore 3.6.0-150100.3.21.13.6.0-150100.3.21.1
PyPIaiohttpbefore 3.9.43.9.4
Red Hat:ansible_automation_platform_developer:2.4::el8python39-blackbefore 0:22.8.0-2.el8ap0:22.8.0-2.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python39-cryptographybefore 0:42.0.5-1.el8ap0:42.0.5-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python39-cryptography-debuginfobefore 0:42.0.5-1.el8ap0:42.0.5-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python39-idnabefore 0:3.7-1.el8ap0:3.7-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python39-jinja2before 0:3.1.4-1.el8ap0:3.1.4-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python39-requestsbefore 0:2.32.2-1.el8ap0:2.32.2-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-blackbefore 0:22.8.0-2.el8ap0:22.8.0-2.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-cryptographybefore 0:42.0.5-1.el8ap0:42.0.5-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-cryptography-debugsourcebefore 0:42.0.5-1.el8ap0:42.0.5-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-idnabefore 0:3.7-1.el8ap0:3.7-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-jinja2before 0:3.1.4-1.el8ap0:3.1.4-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8python3x-requestsbefore 0:2.32.2-1.el8ap0:2.32.2-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8receptorbefore 0:1.4.8-1.el8ap0:1.4.8-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el8receptorctlbefore 0:1.4.8-1.el8ap0:1.4.8-1.el8ap
Red Hat:ansible_automation_platform_developer:2.4::el9python-blackbefore 0:22.8.0-2.el9ap0:22.8.0-2.el9ap
Red Hat:ansible_automation_platform_developer:2.4::el9python-cryptographybefore 0:42.0.5-1.el9ap0:42.0.5-1.el9ap
Red Hat:ansible_automation_platform_developer:2.4::el9python-cryptography-debugsourcebefore 0:42.0.5-1.el9ap0:42.0.5-1.el9ap
Red Hat:ansible_automation_platform_developer:2.4::el9python-idnabefore 0:3.7-1.el9ap0:3.7-1.el9ap

+74

Same product

aiohttp: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-23334aiohttp.web.static(follow_symlinks=True) is vulnerable to directory traversal
    53Plan
  • CVE-2024-52303aiohttp memory leak when middleware is enabled when requesting a resource with a non-allowed method
    34Monitor
  • CVE-2025-69223AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-23829Jan 29, 2024 · aiohttp's HTTP parser (the python one, not llhttp) still overly lenient about separators
    26Monitor
  • ← EarlierCVE-2024-27306Apr 18, 2024 · aiohttp vulnerable to XSS on index pages for static file handling
    24Monitor
  • Later →CVE-2024-42367Aug 12, 2024 · In aiohttp, compressed files as symlinks are not protected from path traversal
    19Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
aio-libs aiohttp3.9.4 · descriptionVendor (CNA)
debian:python-aiohttp3.8.4-1+deb12u1 · Debian:12Package registry (OSV)
opensuse:python-aiohttp3.9.3-150400.10.30.1 · openSUSE:Leap 15.5Package registry (OSV)
PyPI:aiohttp3.9.4Package registry (OSV)
red hat:automation-controller-venv-tower0:4.5.7-1.el8ap · Red Hat:ansible_automation_platform:2.4::el8Package registry (OSV)
red hat:python-cryptography0:42.0.5-1.el9ap · Red Hat:ansible_automation_platform_developer:2.4::el9Package registry (OSV)
red hat:python-cryptography-debugsource0:42.0.5-1.el9ap · Red Hat:ansible_automation_platform_developer:2.4::el9Package registry (OSV)
red hat:python3-cryptography0:42.0.5-1.el9ap · Red Hat:ansible_automation_platform_developer:2.4::el9Package registry (OSV)
red hat:python3-cryptography-debuginfo0:42.0.5-1.el9ap · Red Hat:ansible_automation_platform_developer:2.4::el9Package registry (OSV)
red hat:python39-cryptography0:42.0.5-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
red hat:python39-cryptography-debuginfo0:42.0.5-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
red hat:python39-pillow0:10.3.0-1.el8ap · Red Hat:ansible_automation_platform:2.4::el8Package registry (OSV)
red hat:python3x-cryptography0:42.0.5-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
red hat:python3x-cryptography-debugsource0:42.0.5-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
red hat:receptor0:1.4.8-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
red hat:receptorctl0:1.4.8-1.el8ap · Red Hat:ansible_automation_platform_developer:2.4::el8Package registry (OSV)
suse:python-aiohttp3.9.3-150400.10.30.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records