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Vulnerability record · CVE-2018-20129 · published 13 December 2018

CVE-2018-20129: Dedecms code injection vulnerability

Dedecms · Dedecms

An issue was discovered in DedeCMS V5.7 SP2. uploads/include/dialog/select_images_post.php allows remote attackers to upload and execute arbitrary PHP code via a double extension and a modified ".php" substring, in conjunction with the image/jpeg content type, as demonstrated by the filename=1.jpg.p*hp value.

8.8 CVSS 3.0 High EPSS 8.2% · top 5.3% CWE-94 · Code injection
8.8CVSS 3.0 base score, v2 6.5
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in DedeCMS V5.7 SP2. uploads/include/dialog/select_images_post.php allows remote attackers to upload and execute arbitrary PHP code via a double extension and a modified ".php" substring, in conjunction with the image/jpeg content type, as demonstrated by the filename=1.jpg.p*hp value.

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
http://www.iwantacve.cn/index.php/archives/88/ ExploitThird Party Advisory
http://www.iwantacve.cn/index.php/archives/88/ ExploitThird Party Advisory

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Related vulnerabilities

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

9.8CVE-2026-30643Dedecms code injection vulnerabilityAn issue was discovered in DedeCMS 5.7.118 allowing attackers to execute code via crafted setup tag values in a module upload.EPSS 0.78%9.8CVE-2026-30694Dedecms code injection vulnerabilityAn issue in DedeCMS v.5.7.118 and before allows a remote attacker to execute arbitrary code via the array_filter componentEPSS 0.98%9.8CVE-2024-35510Dedecms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in /dede/file_manage_control.php of DedeCMS v5.7.114 allows attackers to execute arbitrary code via uploading …EPSS 0.73%9.8CVE-2024-35375Dedecms unrestricted file upload vulnerabilityThere is an arbitrary file upload vulnerability on the media add .php page in the backend of the website in version 5.7.114 of DedeCMSEPSS 0.47%9.8CVE-2024-29661Dedecms unrestricted file upload vulnerabilityA File Upload vulnerability in DedeCMS v5.7 allows a local attacker to execute arbitrary code via a crafted payload.EPSS 0.67%9.8CVE-2024-3685Dedecms sql injection vulnerabilityA vulnerability, which was classified as critical, was found in DedeCMS 5.7.112-UTF8. Affected is an unknown function of the file stepselect_main.php…EPSS 0.59%9.8CVE-2024-29684Dedecms cross-site request forgery vulnerabilityDedeCMS v5.7 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component /src/dede/makehtml_homepage.php allowing a remote attack…EPSS 0.57%9.8CVE-2023-7212Dedecms unrestricted file upload vulnerabilityA vulnerability classified as critical has been found in DeDeCMS up to 5.7.112. Affected is an unknown function of the file file_class.php of the com…EPSS 0.59%

Source: NIST National Vulnerability Database (record CVE-2018-20129), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.