CVE-2022-31055

Name: CVE-2022-31055
Creator: NVD / NIST
Published: 2022-06-13T16:15:08.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2022-31055 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. kCTF is a Kubernetes-based infrastructure for capture the flag (CTF) competitions. Prior to version 1.6.0, the kctf cluster set-src-ip-ranges was broken and allowed traffic from any IP. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

kCTF is a Kubernetes-based infrastructure for capture the flag (CTF) competitions. Prior to version 1.6.0, the kctf cluster set-src-ip-ranges was broken and allowed traffic from any IP. The problem has been patched in v1.6.0. As a workaround, those who want to test challenges privately can mark them as `public: false` and use `kctf chal debug port-forward` to connect.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.57%

43.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Google	Kctf	< 1.6.0

References

https://github.com/google/kctf/commit/8cf050be974fcc2fd8aa136701f9a66f2b2a5202Patch, Third Party Advisory
https://github.com/google/kctf/pull/371Patch, Third Party Advisory
https://github.com/google/kctf/security/advisories/GHSA-4g2v-6qc6-6jv5Third Party Advisory
https://github.com/google/kctf/commit/8cf050be974fcc2fd8aa136701f9a66f2b2a5202Patch, Third Party Advisory
https://github.com/google/kctf/pull/371Patch, Third Party Advisory
https://github.com/google/kctf/security/advisories/GHSA-4g2v-6qc6-6jv5Third Party Advisory

Timeline

Published: Jun 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31055?

How severe is CVE-2022-31055?

CVE-2022-31055 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31055?

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-2022-31055?

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

Scan your code now

Source: NVD / NIST