CVE-2022-31055 json
Improper Access Control in kctf
published 2022-06-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-52728
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- google kctf
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/google/kctf/pull/371
patch, third-party-advisory
-
github.com
/google/kctf/commit/8cf050be974fcc2fd8aa136701f9a66f2b2a5202
patch, third-party-advisory
-
github.com
/google/kctf/security/advisories/GHSA-4g2v-6qc6-6jv5
third-party-advisory
Sources
- CVE List CVE-2022-31055
- NVD CVE-2022-31055
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