8.8

CVE-2022-35930: sigstore policy_controller

CVSS: 8.8v3.1HighModified
AliasesGHSA-739f-hw6h-7wq8GO-2022-0759CGA-5c64-3p2x-qfhv
Published 04-08-2022Last modified 23-04-2025
Open JSON

Vulnerability summary

CVE-2022-35930 is a high (CVSS 8.8) vulnerability in sigstore policy_controller. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.5% 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
0.66%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 2
CGA-5G6R-GQX2-76CWCGA-JV9M-X7XC-P2GH

Timeline

  1. 04-08-2022
    PublishedVulnerability first disclosed.
  2. 23-04-2025
    Last modifiedVulnerability information updated.

Description

PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters. In versions prior to 0.2.1 PolicyController will report a false positive, resulting in an admission when it should not be admitted when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to "custom"). An example image that can be used to test this is `ghcr.io/distroless/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2`. Users should upgrade to version 0.2.1 to resolve this issue. There are no workarounds for users unable to upgrade.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.01 pp

From 0.64% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.66%

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

Chainguard2 products
  • policy-controller-fipsAll versions (No fix recorded)
  • policy-controller-tester-fipsAll versions (No fix recorded)
Sigstore2 products
Github.com/sigstore1 product
  • policy-controller< 0.2.1

3 vendors · 5 products

References

6 links