CVE-2026-3043: admerc event_management_system Cross-site Scripting
Vulnerability summary
CVE-2026-3043 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in admerc event_management_system. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.7% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 23-02-2026PublishedVulnerability first disclosed.
- 25-02-2026Last modifiedVulnerability information updated.
Description
A flaw has been found in itsourcecode Event Management System 1.0. The impacted element is an unknown function of the file /admin/navbar.php. Executing a manipulation of the argument page can lead to cross site scripting. The attack may be performed from remote. The exploit has been published and may be used.
CVSS metrics
7 scores · 2 sources · 4 versions- NVDNIST2.1LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XDiffers
- CVE.orgCNA4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:RDiffers
- NVDNIST5.0MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
+0.22 pp
From 0.26% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCve Submit
Maturity: poc
Weaknesses
CWE · root cause- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
- CWE-94Improper Control of Generation of Code ('Code Injection')The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
Affected systems
Admerc1 product
Itsourcecode1 product
2 vendors · 2 products
References
5 links- itsourcecode.comProduct