Apache Tika has a high-severity vulnerability identified as CVE-2025-66516. This vulnerability allows attackers to carry out XML External Entity (XXE) injection through a crafted XFA file embedded in a PDF. The affected modules include tika-core (versions 1.13 to 3.2.1), tika-pdf-module (versions 2.0.0 to 3.2.1), and tika-parsers (versions 1.13 to 1.28.5).
The severity of this vulnerability is rated at 8.4 on the CVSS scale, indicating a significant risk to organizations that utilize these versions of Apache Tika. The exploitation of this vulnerability can lead to unauthorized access to sensitive information due to the high impact on confidentiality, integrity, and availability.
Currently, this vulnerability is known to be actively exploitable. Organizations using vulnerable versions should prioritize patching immediately to mitigate potential risks associated with this vulnerability.
The urgency for defenders is high, as failure to address this vulnerability could lead to severe repercussions. It is essential to understand the implications of XML External Entity injections and take proactive measures to secure affected systems.
Vulnerability Details
CVE-2025-66516 describes a critical XXE vulnerability affecting Apache Tika's tika-core, tika-pdf-module, and tika-parsers across multiple platforms. The flaw allows attackers to execute arbitrary code through specially crafted PDF files.
The CVSS score of 8.4 categorizes this as a high severity vulnerability. The attack vector is local, meaning an attacker requires access to the affected system to exploit the vulnerability. The attack complexity is low, with no privileges or user interaction required, highlighting the ease of exploitation.
The vulnerability affects Apache Tika versions between 1.13 and 3.2.1, including the tika-pdf-module and tika-parsers. Organizations are encouraged to upgrade to the latest version to mitigate this risk.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of XML external entities, which can be exploited through specially crafted files. Attackers can leverage this flaw to access sensitive data or execute malicious code on the affected system.
The attack vector is local, requiring attackers to have access to the system where Tika is deployed. The attack complexity is low, with no user interaction required to exploit the vulnerability. This increases the risk, as it can be executed without end-user knowledge.
The confidentiality, integrity, and availability impacts are all high, signifying that the exploitation can lead to complete system compromise.
Risk & Impact Analysis
The real-world risk from this vulnerability is significant, particularly for organizations that rely on Apache Tika for processing documents. The ability for an attacker to execute arbitrary code could lead to unauthorized access to sensitive documents or data theft.
In terms of blast radius, the potential impact could extend beyond the compromised system to other interconnected systems, leading to a wider security breach. Organizations should understand that the exploitation of this vulnerability could lead to severe data loss or service disruption.
Given the high CVSS score and the known exploitability, organizations should address this vulnerability in their priority patch cycle to reduce exposure to potential attacks.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Apache Tika versions 1.13 to 3.2.1 are affected by this vulnerability. Users should ensure they upgrade to version 3.2.2 or later to mitigate exposure.
Mitigation & Remediation
Organizations should prioritize patching Apache Tika to version 3.2.2 or later immediately. If an upgrade is not possible, consider implementing configuration hardening measures to minimize the attack surface.
For further assistance, organizations may consider engaging in penetration testing to assess their security posture.
Detection Guidance
Organizations should monitor logs for any anomalies related to PDF file processing. Additionally, keep an eye out for unexpected behavior in applications utilizing Apache Tika.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-66516 lies in the increasing prevalence of XXE vulnerabilities. Security teams must recognize the patterns of such vulnerabilities and implement robust validation mechanisms.
For more insights on securing your applications, refer to our resources on vulnerability management programs and penetration testing methodologies to better prepare against such vulnerabilities.
By understanding the implications of CVE-2025-66516, organizations can better fortify their defenses against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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