What is CVE-2022-33124?

CVE-2022-33124 is a medium-severity vulnerability in Aiohttp. CVSS score: 5.5/10. Published 2022-06-23.

How severe is CVE-2022-33124?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Aiohttp

CVE-2022-33124

AIOHTTP 3.8.1 can report a "ValueError: Invalid IPv6 URL" outcome, which can lead to a Denial of Service (DoS). NOTE: multiple third parties dispute this issue because there is no example of a context in which denial of service would occur, and many common contexts have exception handing in the calling application

Published 2022-06-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.3th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Aiohttp — versions 3.8.1

References

github.com/aio-libs/aiohttp/issues/6772 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-33124?: CVE-2022-33124 is a medium-severity vulnerability in Aiohttp. CVSS score: 5.5/10. Published 2022-06-23.
How severe is CVE-2022-33124?: Medium severity. CVSS v3 base score is 5.5 out of 10.