CVE-2026-122310 PUBLISHED

Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath

Assigner: VulnCheck
Reserved: 04.11.2026 Published: 05.11.2026 Updated: 05.11.2026

Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose fragment or query the Kubernetes client discards. A namespace-scoped user who can create a Policy can hide ../ segments behind # or ? to reach cluster-scoped endpoints with Kyverno's ServiceAccount, gaining cluster admin.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9.9

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	kyverno
Product	kyverno
Versions	Default: unaffected affected from 1.19.1 to 1.19.2 (excl.) Version 1.19.2 is unaffected

CVE-2026-122310 PUBLISHED

Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath

Metrics

Product Status

Credits

References

Problem Types