CVE-2026-76800

DeDeCMS select_media_post.php unrestricted upload

State: Published
Severity: 5.3 Medium
Published: Aug 20, 2026
Updated: Aug 21, 2026
Reserved: Aug 19, 2026

Description

A flaw has been found in DeDeCMS 3. Affected by this vulnerability is an unknown functionality of the file /include/dialog/select_media_post.php. Executing a manipulation of the argument uploadfile can lead to unrestricted upload. The attack can be executed remotely. The exploit has been published and may be used.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-434 Unrestricted Upload
CWE-284 Improper Access Controls

Affected Products

Product	Versions
DeDeCMSn/a	3Affected

References

VDB-393317 | DeDeCMS select_media_post.php unrestricted uploadvdb-entrytechnical-description
VDB-393317 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-76800 | CVE Analysis and Reportthird-party-advisory
Submit #880081 | https://www.dedecms.com/ DeDeCMS v3 Unrestricted Uploadthird-party-advisory
https://uvxbywu62qm.feishu.cn/wiki/TKqDwJGYaiBVXpk3EtFcdjRDnsg?from=from_copylinkexploit

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