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CVE-2026-44705 raszi CVE debrief

CVE-2026-44705 is a path traversal vulnerability in the tmp npm package, which allows attackers to create files outside the intended temporary directory. This HIGH severity vulnerability has a CVSS score of 7.7 and was published on 2026-06-11T17:16:33.853Z. The vulnerability affects applications that pass user-controlled data to tmp's file/directory creation functions without proper input sanitization. The issue was fixed in version 0.2.6 of the tmp package.

Vendor
raszi
Product
node-tmp
CVSS
HIGH 7.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-15
Advisory published
2026-06-11
Advisory updated
2026-06-15

Who should care

Developers and administrators using the tmp npm package in their applications, especially those that handle user-controlled input, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The tmp npm package contains a path traversal vulnerability that allows escaping the intended temporary directory when untrusted data flows into the prefix, postfix, or dir options. By embedding traversal sequences (e.g., ../) or path separators in these parameters, attackers can cause files to be created outside the configured temporary base directory at attacker-controlled locations with the privileges of the running process.

Defensive priority

HIGH

Recommended defensive actions

  • Update the tmp npm package to version 0.2.6 or later.
  • Ensure proper input sanitization for user-controlled data passed to tmp's file/directory creation functions.
  • Review and update affected applications to prevent exploitation.

Evidence notes

This vulnerability was published on 2026-06-11T17:16:33.853Z and modified on 2026-06-13T03:16:20.897Z. The CVSS score is 7.7, indicating a HIGH severity vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-44705 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-44705

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

  • CVE-2026-44705 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-44705

    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.