CVE-2026-15143: Guardrails-detectors: guardrails-detectors: ssrf and local file read via user-supplied xml schema (xml-with-schema:)
A flaw was found in the file_type content detector of guardrails-detectors. This vulnerability allows a remote attacker to supply an arbitrary XML Schema Definition (XSD) string, which is processed without proper restrictions. This can lead to server-side requests to arbitrary URLs or local file reads, potentially resulting in sensitive information disclosure, such as cloud provider credentials or access to internal network services.
Security readout for executives and security teams
Plain-English summary
CVE-2026-15143 is a critical flaw in guardrails-detectors used with Red Hat OpenShift AI packages. An attacker may supply a malicious XML schema that causes the service to read local files or make server-side requests, risking exposure of sensitive data such as cloud credentials or internal service responses.
Executive priority
Treat this as urgent for any RHOAI environment processing untrusted content. The main business risk is sensitive data disclosure from cloud credentials or internal services, not service outage. Prioritize exposure review and vendor remediation tracking.
Technical view
The file_type content detector processes user-supplied XSD content without adequate restrictions. The published CVSS 3.1 score is 9.3 with network, low-complexity, unauthenticated, no-user-interaction attack conditions, changed scope, high confidentiality impact, and low integrity impact. The listed weakness is CWE-918.
Likely exposure
Exposure is most likely in Red Hat OpenShift AI deployments using the affected rhoai/odh-built-in-detector-rhel9 or rhoai/odh-guardrails-detector-huggingface-runtime-rhel9 packages where untrusted detector input can reach XML schema handling.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates remote unauthenticated exploitation is plausible, but no public exploit status or weaponized technique is provided in the sources.
Researcher notes
Evidence is limited to the provided CVE, Red Hat references, and CVSS data. No fixed versions, patches, or official workarounds are included in the bundle. Avoid assuming broader guardrails-detectors distribution impact beyond the listed Red Hat packages.
Mitigation direction
Check Red Hat CVE and Bugzilla pages for official fixes or workarounds.
Update affected Red Hat OpenShift AI detector images when vendor-fixed builds are available.
Limit exposure of services that accept untrusted detector input.
Apply restrictive egress controls around detector workloads where operationally feasible.
Review secrets placement to reduce impact of local file disclosure.
Validation and detection
Inventory RHOAI deployments for the two affected detector package names.
Identify routes or services that pass untrusted content to file_type detection.
Check whether xml-with-schema handling is enabled or reachable.
Review workload logs for unusual outbound requests or sensitive file access indicators.
Track Red Hat advisory status for corrected package versions.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-918 · source CWE mapping
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.