CVE-2026-34984

medium Red Hat
CVSS v3 Base Score
6.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 88% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Published: April 14, 2026 (30 days ago)
Last Modified: April 14, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in External Secrets Operator. An attacker with the ability to create or update templated ExternalSecret resources can exploit a vulnerability in the v2 template engine. This flaw allows the attacker to use the getHostByName function to perform controller-side DNS lookups, leading to the exfiltration of sensitive secret material through DNS queries. This results in a confidentiality issue, as secret data can be leaked without requiring direct outbound network access from the attacker's workload.

CWE

CWE-94

Affected Products

External Secrets Operator for Red Hat OpenShift

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com 🔗 github.com