CVE-2022-3433

Name: CVE-2022-3433
Creator: NVD / NIST
Published: 2022-10-10T22:15:10.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2022-3433 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. The aeson library is not safe to use to consume untrusted JSON input. A remote user could abuse this flaw to produce a hash collision in the underlying unordered-containers library by sending specially crafted JSON data, resulting in a denial of service.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

The aeson library is not safe to use to consume untrusted JSON input. A remote user could abuse this flaw to produce a hash collision in the underlying unordered-containers library by sending specially crafted JSON data, resulting in a denial of service.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.71%

48.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Haskell	Aeson	< 2.0.1.0

References

https://cs-syd.eu/posts/2021-09-11-json-vulnerabilityExploit, Patch, Technical Description, Third Party Advisory
https://cs-syd.eu/posts/2021-09-11-json-vulnerabilityExploit, Patch, Technical Description, Third Party Advisory

Timeline

Published: Oct 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3433?

How severe is CVE-2022-3433?

CVE-2022-3433 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3433?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3433?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST