CVE-2025-5895 in Metabase
Summary
by MITRE • 06/09/2025
A vulnerability was found in Metabase 54.10. It has been classified as problematic. This affects the function parseDataUri of the file frontend/src/metabase/lib/dom.js. The manipulation leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The patch is named 4454ebbdc7719016bf80ca0f34859ce5cee9f6b0. It is recommended to apply a patch to fix this issue.
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Analysis
by VulDB Data Team • 07/09/2026
This vulnerability in Metabase version 54.10 represents a significant security risk classified as problematic due to its potential for remote exploitation and the nature of the underlying flaw. The issue resides within the parseDataUri function located in frontend/src/metabase/lib/dom.js, which processes data URI parsing operations that are commonly used for handling base64 encoded content and other embedded resources within web applications. The vulnerability manifests through inefficient regular expression complexity that can be exploited through crafted input manipulation, creating a path for potential attackers to disrupt normal application operation.
The technical flaw specifically involves the use of regular expressions with catastrophic backtracking patterns within the parseDataUri function. When processing maliciously constructed data URIs, these poorly optimized regex patterns can cause exponential execution time growth, leading to denial of service conditions where the application becomes unresponsive or crashes. This type of vulnerability falls under CWE-1321 which specifically addresses inefficient regular expression complexity that can lead to resource exhaustion attacks. The vulnerability's remote exploitability means that attackers can trigger this condition through web-based interactions without requiring local access or authentication.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it can potentially be leveraged for more sophisticated attacks within the application context. Since Metabase is a business intelligence platform that handles sensitive data analytics and reporting, an attacker who successfully exploits this vulnerability could disrupt critical business operations, prevent legitimate users from accessing dashboards and reports, or potentially use the disruption as a cover for additional attacks targeting other system components. The public disclosure of the exploit increases the risk profile significantly, as malicious actors can immediately implement attack vectors without requiring advanced reconnaissance.
The recommended mitigation strategy involves applying the specific patch identified by commit hash 4454ebbdc7719016bf80ca0f34859ce5cee9f6b0 which addresses the inefficient regular expression patterns in the parseDataUri function. Organizations should also implement additional protective measures including input validation for all data URI processing, monitoring for unusual processing patterns that might indicate exploitation attempts, and network-level filtering to limit access to vulnerable endpoints where possible. This vulnerability demonstrates the importance of regular security updates and proper code review processes for preventing regex-based denial of service conditions. The ATT&CK framework categorizes this type of vulnerability under privilege escalation and resource exhaustion techniques since it can be used to consume system resources and potentially gain unauthorized access to system functions, particularly when combined with other attack vectors that might be available within the application's broader attack surface.