CVE-2018-18840: sem-cms semcms Cross-site Scripting
CVSS: 5.4v3.0MediumModified
Published 30-10-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-18840 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in sem-cms semcms. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.4/10
010
Medium · v3.0 (NVD)EPSS score
0.56%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 30-10-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
XSS was discovered in SEMCMS PHP V3.4 via the SEMCMS_SeoAndTag.php?Class=edit&CF=SeoAndTag tag_indexmetatit parameter.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.4Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NSourcesSingle source
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
0.00 pp
From 0.56% on 19-09-2026
19-09-202619-10-2026
EPSS score0.56%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundXss Expoit
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Sem-cms1 product
- semcms3.4
1 vendor · 1 product
References
1 links- github.com/m3lon/XSS-Expoit/blob/master/SEMCMS%20Stored%20XSS%20Vulnerability.mdX Refsource MISCExploitThird Party Advisory