8.8

CVE-2023-33191: kyverno Improper Access Control

CVSS: 8.8v3.1HighModified
AliasesGHSA-33hq-f2mf-jm3cGO-2023-1801
Published 30-05-2023Last modified 10-01-2025
Open JSON

Vulnerability summary

CVE-2023-33191 is a high (CVSS 8.8) Improper Access Control vulnerability in kyverno. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.4% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-05-2023
    PublishedVulnerability first disclosed.
  2. 10-01-2025
    Last modifiedVulnerability information updated.

Description

Kyverno is a policy engine designed for Kubernetes. Kyverno seccomp control can be circumvented. Users of the podSecurity `validate.podSecurity` subrule in Kyverno 1.9.2 and 1.9.3 are vulnerable. This issue was patched in version 1.9.4.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

0.00 pp

From 0.48% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.48%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/kyverno1 product
  • kyverno≥ 1.9.2, < 1.9.4
Kyverno1 product
Nirmata1 product

3 vendors · 3 products

References

5 links