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CVE-2026-30281 Maru CVE debrief

CVE-2026-30281 is an arbitrary file overwrite vulnerability in MaruNuri LLC v2.0.23. This vulnerability allows attackers to overwrite critical internal files via the file import process, potentially leading to arbitrary code execution or information exposure. The CVSS score for this vulnerability is 9.8, indicating a critical severity level. Organizations and individuals using MaruNuri LLC v2.0.23 should be aware of the potential risks and take immediate action to mitigate the vulnerability. The vulnerability's critical severity and potential for arbitrary code execution or information exposure make it a high-priority concern. Evidence is limited to CVE and NVD information, and defenders should verify affected product deployments, review official advisories, and plan for vendor-supported updates or mitigations.

Vendor
Maru
Product
Neo.maru
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-31
Original CVE updated
2026-07-24
Advisory published
2026-03-31
Advisory updated
2026-07-24

Who should care

Organizations using MaruNuri LLC v2.0.23 should prioritize patching this vulnerability to prevent potential attacks. The vulnerability's critical severity and potential for arbitrary code execution or information exposure make it a high-priority concern.

Technical summary

The vulnerability exists in the file import process of MaruNuri LLC v2.0.23, allowing attackers to overwrite critical internal files. This could lead to arbitrary code execution or information exposure. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a high impact on confidentiality, integrity, and availability. The vulnerability is described as an arbitrary file overwrite vulnerability in MaruNuri LLC v2.0.23. Affected product deployments should be identified, and owners should prioritize patching based on risk. Compensating controls, such as monitoring for suspicious file import activity, should be implemented.

Defensive priority

High

Recommended defensive actions

  • Apply the vendor's official patch for MaruNuri LLC v2.0.23 as soon as possible.
  • Implement compensating controls, such as monitoring for suspicious file import activity.
  • Conduct a thorough inventory of affected systems and prioritize patching based on risk.
  • Consider isolating affected systems until patches can be applied.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record was published on 2026-03-31T16:16:29.820Z and was last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Analyzed. The vulnerability is described as an arbitrary file overwrite vulnerability in MaruNuri LLC v2.0.23. Evidence is limited to CVE and NVD information. Defenders should verify affected product deployments, review official advisories, and plan for vendor-supported updates or mitigations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-30281 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-30281

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-30281 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-30281

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.