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Vulnerability record · CVE-2018-12940 · published 31 July 2018

CVE-2018-12940: Seeddms unrestricted file upload vulnerability

Seeddms · Seeddms

Unrestricted file upload vulnerability in "op/op.UploadChunks.php" in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows remote attackers to execute arbitrary code by uploading a file with an executable extension specified by the "qqfile" parameter. This allows an authenticated attacker to upload a malicious file containing PHP code to execute operating system commands to the web root of the application.

8.8 CVSS 3.0 High EPSS 2.5% · top 15.9% CWE-434 · Unrestricted file upload
8.8CVSS 3.0 base score, v2 6.5
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Unrestricted file upload vulnerability in "op/op.UploadChunks.php" in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows remote attackers to execute arbitrary code by uploading a file with an executable extension specified by the "qqfile" parameter. This allows an authenticated attacker to upload a malicious file containing PHP code to execute operating system commands to the web root of the application.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG Third Party Advisory
https://www.contextis.com/resources/advisories/cve-2018-12940 Third Party Advisory
https://sourceforge.net/p/seeddms/code/ci/seeddms-5.1.x/tree/CHANGELOG Third Party Advisory
https://www.contextis.com/resources/advisories/cve-2018-12940 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-44938Seeddms vulnerabilityWeak reset token generation in SeedDMS v6.0.20 and v5.1.7 allows attackers to execute a full account takeover via a brute force attack.EPSS 0.97%8.8CVE-2021-33223Seeddms insecure direct object reference vulnerabilityAn issue discovered in SeedDMS 6.0.15 allows an attacker to escalate privileges via the userid and role parameters in the out.UsrMgr.php file.EPSS 0.80%8.8CVE-2018-12941Seeddms improper input validation vulnerabilityThis vulnerability allows remote attackers to execute arbitrary code in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 by adding a system command …EPSS 3.6%8.8CVE-2018-12942Seeddms sql injection vulnerabilitySQL injection vulnerability in the "Users management" functionality in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows authenticated attacke…EPSS 1.5%7.5CVE-2019-12744Seeddms unrestricted file upload vulnerabilitySeedDMS before 5.1.11 allows Remote Command Execution (RCE) because of unvalidated file upload of PHP scripts, a different vulnerability than CVE-201…EPSS 12%7.2CVE-2025-45752Seeddms code injection vulnerabilityA vulnerability in SeedDMS 6.0.32 allows an attacker with admin privileges to execute arbitrary PHP code by exploiting the zip import functionality i…EPSS 0.57%6.5CVE-2022-28478Seeddms path traversal vulnerabilitySeedDMS 6.0.17 and 5.1.24 are vulnerable to Directory Traversal. The "Remove file" functionality inside the "Log files management" menu does not sani…EPSS 1.5%6.5CVE-2018-12939Seeddms path traversal vulnerabilityA directory traversal flaw in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows an authenticated attacker to write to (or potentially delete) …EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2018-12940), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.