How severe is CVE-2025-69225?

CVE-2025-69225 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-69225 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-69225?

CVE-2025-69225 affects Aiohttp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-69225?

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

Does CVE-2025-69225 have an EU (EUVD) identifier?

Yes. CVE-2025-69225 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1047.

When was CVE-2025-69225 published?

CVE-2025-69225 was published on 2026-01-06 and last updated on 2026-06-17.

CVE-2025-69225

CVE-2025-69225 is a medium-severity vulnerability in Aiohttp with a CVSS 3.x base score of 5.3. 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 5.3)
CVSS v4: 2.7
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1047
Weakness: CWE-444
Affected product: Aiohttp
Published: 2026-01-06
Last modified: 2026-06-17

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. This issue is fixed in version 3.13.3.

Frequently asked questions

What is CVE-2025-69225?: AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. This issue is fixed in version 3.13.3.
How severe is CVE-2025-69225?: CVE-2025-69225 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-69225 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-69225?: CVE-2025-69225 affects Aiohttp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-69225?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-69225 have an EU (EUVD) identifier?: Yes. CVE-2025-69225 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1047.
When was CVE-2025-69225 published?: CVE-2025-69225 was published on 2026-01-06 and last updated on 2026-06-17.

References

Affected products (1)

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

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