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PatchSiren cyber security CVE debrief

CVE-2026-10732 kevva CVE debrief

CVE-2026-10732 is a vulnerability in the decompress package that allows for arbitrary file writes via archive extraction (Zip Slip). An attacker can write arbitrary files on the host filesystem, potentially leading to remote code execution, by providing a specially crafted ZIP archive. This vulnerability bypasses all existing path traversal protections, including preventWritingThroughSymlink, added as part of the fix for CVE-2020-12265.

Vendor
kevva
Product
decompress
CVSS
MEDIUM 5.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-09-07
Advisory published
2026-06-05
Advisory updated
2026-09-07

Who should care

Developers and users of the decompress package should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The decompress package is vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) when extracting a ZIP archive containing two entries with the same path - the first being a symlink to an arbitrary target and the second being a regular file. The file content is written through the symlink to the target location outside the output directory. This is due to the microtask processing order that checks readlink for the second file before resolving symlink for the first file.

Defensive priority

High

Recommended defensive actions

  • Update to the latest version of the decompress package.
  • Use a secure ZIP archive extraction library.
  • Validate and sanitize user input to prevent arbitrary file writes.

Evidence notes

The CVE-2026-10732 vulnerability was reported by Snyk and has a CVSS score of 5.6 (Medium).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-10732 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-10732

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

  • CVE-2026-10732 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-10732

    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.