Medium severity · published Oct 30, 2018
CVE-2018-18840
XSS was discovered in SEMCMS PHP V3.4 via the SEMCMS_SeoAndTag.php?Class=edit&CF=SeoAndTag tag_indexmetatit parameter
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
XSS was discovered in SEMCMS PHP V3.4 via the SEMCMS_SeoAndTag.php?Class=edit&CF=SeoAndTag tag_indexmetatit parameter.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Semcms · Sem-cms
3.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18840
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18840
Exploit
https://github.com/m3lon/XSS-Expoit/blob/master/SEMCMS%20Stored%20XSS%20Vulnerability.md
More from Semcms
9.8
CVE-2026-1552
SEMCMS SEMCMS_Info.php sql injection
9.8
CVE-2025-25686
semcms <=5.0 is vulnerable to SQL Injection in SEMCMS_Fuction.php
9.8
CVE-2024-46103
SEMCMS 4.8 is vulnerable to SQL Injection via SEMCMS_Main.php
9.8
CVE-2024-30938
SQL Injection vulnerability in SEMCMS v.4.8 allows a remote attacker to obtain sensitive information via the ID parameter in the SEMCMS_User.php component
9.8
CVE-2024-31012
An issue was discovered in SEMCMS v.4.8, allows remote attackers to execute arbitrary code, escalate privileges, and obtain sensitive information via the upload.php file