CVE-2026-15378 Red Hat CVE debrief

Who should care

Security teams and administrators responsible for the `guardrails-detectors` component should be aware of this critical vulnerability and take immediate action to mitigate the risk. They should review affected product deployments, implement additional security measures, and monitor for suspicious activity.

Technical summary

The vulnerability allows a remote attacker to perform a blind Server-Side Request Forgery (SSRF) by submitting a specially crafted XML Schema Definition (XSD) string. This can lead to unauthorized access to sensitive information, including credentials from cloud metadata services, Kubernetes API, internal MinIO, and other internal network endpoints. Additionally, it enables local file reads of critical data such as service account tokens and pod secrets. Security teams should review affected product deployments and implement additional security measures.

Defensive priority

High

Recommended defensive actions

• Immediately update the `guardrails-detectors` component to the latest version
• Implement additional security measures to prevent SSRF attacks
• Monitor for suspicious activity and review logs for potential exploitation
• Restrict access to sensitive information and internal network endpoints
• Perform regular security audits and vulnerability assessments
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-10T10:16:23.553Z and has not been modified since then. The NVD entry is currently 9.3. The vulnerability allows a remote attacker to perform a blind Server-Side Request Forgery (SSRF) by submitting a specially crafted XML Schema Definition (XSD) string. This can lead to unauthorized access to sensitive information, including credentials from cloud metadata services, Kubernetes API, internal MinIO, and other internal network endpoints. Additionally, it enables local file reads of critical data such as service account tokens and pod secrets. Evidence is limited, and defenders should verify affected scope and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.