CVE-2026-5052

medium Red Hat
CVSS v3 Base Score
5.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 99% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Published: April 17, 2026 (27 days ago)
Last Modified: April 17, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Vault’s PKI engine. The ACME (Automated Certificate Management Environment) validation process did not properly restrict requests to local network targets when handling http-01 and tls-alpn-01 challenges. This vulnerability, known as Server-Side Request Forgery (SSRF), could allow a remote attacker to send crafted ACME validation challenges, potentially leading to the disclosure of sensitive information from internal network resources.

CWE

CWE-918

Affected Products

Red Hat OpenShift Container Platform 4Red Hat Openshift Data Foundation 4

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 discuss.hashicorp.com