CVE intelligence and bounded remediation
CVE-2018-5203 — Dextsolution Dextuploadx5 security vulnerability
Critical
CVSS 9.8
DEXTUploadX5 version Between 1.0.0.0 and 2.2.0.0 contains a vulnerability that could allow remote attacker to download and execute remote arbitrary file by setting the arguments to the activex method. this can be leveraged for code execution.
- Severity
- Critical
- CVSS
- 9.8 (3.0)
- Published
- 2018-12-28
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-20
Affected products
- dextsolution / dextuploadx5
Matched remediation archetype
Path traversal, unsafe upload, and file handling
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
- Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
- Review canonicalization and containment checks across supported operating systems and storage backends.
Remediate safely
- Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
- Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
- Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.
Authoritative sources
Complete CVE record and remediation plan
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