CVE-2018-20129

Name: CVE-2018-20129
Creator: NVD / NIST
Published: 2018-12-13T08:29:00.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.23%

Last modified Jun 17, 2026

CVE-2018-20129 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 8.23% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

8.23%

94.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions	Update
Dedecms	Dedecms	5.7	Sp2

References

http://www.iwantacve.cn/index.php/archives/88/Exploit, Third Party Advisory
http://www.iwantacve.cn/index.php/archives/88/Exploit, Third Party Advisory

Timeline

Published: Dec 13, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20129?

How severe is CVE-2018-20129?

Severity scoring for CVE-2018-20129 is pending analysis. The EPSS model estimates a 8.23% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20129?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20129?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST