CVE-2025-9264 is a medium-severity vulnerability affecting versions 3.1.0 and 3.1.1 of the Xuxueli xxl-job software, specifically within the Jobs Handler component. The flaw resides in the 'remove' function of the JobInfoController.java source file. The vulnerability arises from improper control of resource identifiers, where manipulation of the 'ID' argument allows an attacker to influence resource access or deletion operations improperly. This can lead to unauthorized removal or modification of job entries managed by the xxl-job scheduler. The vulnerability is remotely exploitable without requiring user interaction or prior authentication, increasing the risk of exploitation in exposed environments. The CVSS 4.0 base score is 5.3, reflecting a medium severity level, with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact primarily affects the integrity and availability of scheduled jobs, potentially disrupting automated task execution and causing operational issues. Although no known exploits are currently observed in the wild, a public exploit has been released, which could facilitate attacks if systems remain unpatched. The vulnerability does not affect confidentiality directly but can lead to denial of service or unauthorized job removals, impacting business processes relying on the scheduler. The lack of patches at the time of reporting necessitates immediate attention to mitigate risks.

For European organizations using xxl-job versions 3.1.0 or 3.1.1, this vulnerability could disrupt critical automated workflows by allowing attackers to delete or manipulate scheduled jobs remotely. This disruption can affect business continuity, especially in sectors relying heavily on scheduled tasks such as finance, manufacturing, logistics, and IT services. The integrity of job scheduling is compromised, potentially leading to missed deadlines, data processing errors, or cascading failures in dependent systems. Since the exploit requires no authentication or user interaction, exposed management interfaces could be targeted by attackers scanning for vulnerable instances. The availability of a public exploit increases the likelihood of opportunistic attacks, which could lead to service outages or operational delays. Organizations handling sensitive or regulated data might face compliance risks if job disruptions affect data processing timelines or audit trails. The medium severity rating suggests moderate risk, but the operational impact could be significant depending on the criticality of the scheduled jobs managed by xxl-job.

1. Immediate upgrade: Organizations should upgrade xxl-job to a version later than 3.1.1 once a patched release is available from the vendor. 2. Access control: Restrict network access to the xxl-job administration interface using firewalls, VPNs, or IP whitelisting to limit exposure to trusted users only. 3. Input validation: Implement additional input validation and sanitization on the 'ID' parameter at the application or web server level to prevent manipulation. 4. Monitoring and logging: Enable detailed logging of job removal requests and monitor for unusual or unauthorized deletion attempts to detect exploitation attempts early. 5. Network segmentation: Isolate systems running xxl-job from public networks or untrusted zones to reduce attack surface. 6. Incident response readiness: Prepare response plans to quickly restore deleted jobs and recover from potential disruptions. 7. Vendor communication: Stay in close contact with the vendor for timely patch releases and advisories. 8. Temporary workarounds: If patching is delayed, consider disabling the vulnerable 'remove' function or restricting its usage to authenticated and authorized personnel only through custom access controls.