CVE-2026-49876 in Gravitino
Summary
by MITRE • 07/13/2026
Authenticated SSRF in Gravitino JobManager allows server-side HTTP requests to internal network and cloud metadata endpoints via unvalidated job template URIs. A vulnerability in Apache Gravitino.
This issue affects Apache Gravitino: from 1.0.0 through 1.2.1.
Users are recommended to upgrade to version 1.3.0, which fixes the issue.
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Analysis
by VulDB Data Team • 07/13/2026
The vulnerability under discussion represents a critical authenticated server-side request forgery flaw within Apache Gravitino's JobManager component, specifically affecting versions ranging from 1.0.0 through 1.2.1. This security weakness stems from insufficient validation of job template URIs that are processed during job execution workflows, creating an avenue for malicious actors with legitimate credentials to manipulate the system into making unauthorized HTTP requests to internal network resources and cloud metadata endpoints. The flaw operates at the intersection of improper input validation and insecure direct object references, where user-supplied URI data is directly utilized without adequate sanitization or verification mechanisms.
The technical implementation of this vulnerability allows an authenticated attacker to craft job templates containing malicious URIs that point to internal services such as internal APIs, database endpoints, or cloud provider metadata services like AWS EC2 metadata or Azure Instance Metadata Service. When the JobManager processes these templates, it executes HTTP requests to the specified endpoints without validating whether the target addresses are legitimate or authorized for access. This behavior aligns with CWE-918, which classifies server-side request forgery vulnerabilities, and demonstrates how insecure parameter handling can lead to unauthorized resource access within network boundaries.
From an operational perspective, this vulnerability presents significant risks to organizations relying on Apache Gravitino for data management and orchestration tasks. Attackers could potentially enumerate internal network services, extract sensitive metadata information from cloud environments, or even perform lateral movement attacks by accessing internal APIs that should remain protected. The authenticated nature of the exploit means that attackers need valid credentials to access the system, but once inside, they can leverage this vulnerability to gain unauthorized access to resources within the internal network that would normally be isolated from external threats. This scenario particularly impacts cloud-native environments where metadata endpoints contain sensitive information about running instances, security groups, and other infrastructure details.
The mitigation strategy centers on upgrading to Apache Gravitino version 1.3.0, which implements proper URI validation and sanitization mechanisms within the JobManager component. This upgrade addresses the root cause by ensuring that all job template URIs are properly validated before any HTTP requests are initiated, thereby preventing malicious redirection attempts. Organizations should also consider implementing network segmentation and access controls to limit the potential impact of such vulnerabilities, while monitoring for unusual patterns in job execution and HTTP request behavior. Security practitioners should reference ATT&CK technique T1071.004 for application layer protocol evasion and T1566.002 for malicious file execution through compromised applications to understand how this vulnerability might be leveraged in broader attack chains. The fix demonstrates proper input validation practices that align with secure coding guidelines and help prevent similar issues in future implementations of similar systems.