How severe is CVE-2025-69224?

CVE-2025-69224 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-69224 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-69224?

CVE-2025-69224 affects Aiohttp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-69224?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-69224 have an EU (EUVD) identifier?

Yes. CVE-2025-69224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1048.

When was CVE-2025-69224 published?

CVE-2025-69224 was published on 2026-01-05 and last updated on 2026-06-17.

CVE-2025-69224

CVE-2025-69224 is a medium-severity vulnerability in Aiohttp with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-444.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.3
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1048
Weakness: CWE-444
Affected product: Aiohttp
Published: 2026-01-05
Last modified: 2026-06-17

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. 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. This issue is fixed in version 3.13.3.

Frequently asked questions

What is CVE-2025-69224?: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below of the Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters. 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. This issue is fixed in version 3.13.3.
How severe is CVE-2025-69224?: CVE-2025-69224 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-69224 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-69224?: CVE-2025-69224 affects Aiohttp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-69224?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-69224 have an EU (EUVD) identifier?: Yes. CVE-2025-69224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1048.
When was CVE-2025-69224 published?: CVE-2025-69224 was published on 2026-01-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*

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