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TI-2022-16357 Aliases CVE-2022-35930GHSA-739f-hw6h-7wq8

Ability to bypass attestation verification in sigstore PolicyController

Priority MEDIUM 41CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-347.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00696 53rd percentileScored 2026-11-07
Fix Fixed policy-controller (sigstore): 0.2.1github.com/sigstore/policy-controller (Go): 0.2.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
sigstorepolicy-controllerbefore 0.2.10.2.1Patch availableCNA
—github.com/sigstore/policy-controller (Go)before 0.2.10.2.1Patch availableGHSA-739f-hw6h-7wq8
  • policy-controller Vendorsigstore Affected before 0.2.1 Fixed in 0.2.1 Patch available CNA
  • github.com/sigstore/policy-controller (Go) Vendor— Affected before 0.2.1 Fixed in 0.2.1 Patch available GHSA-739f-hw6h-7wq8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sigstore:policy_controller:*:*:*:*:*:*:*:*before 0.2.1Vulnerablesigstore
  • cpe:2.3:a:sigstore:policy_controller:*:*:*:*:*:*:*:* Versions before 0.2.1 Vulnerable ·sigstore

Remediation

  • Fix · CNA policy-controller (sigstore) Fixed in 0.2.1
  • Fix · GHSA-739f-hw6h-7wq8 github.com/sigstore/policy-controller (Go) Fixed in 0.2.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-35930
  2. 2026-10-03 Alias added: GHSA-739f-hw6h-7wq8
  3. 2026-10-11 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 3

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences