5.3

CVE-2026-4877: itsourcecode payroll_management_system Cross-site Scripting

CVSS: 5.3v4.0MediumDeferred
Published 26-03-2026Last modified 26-03-2026

Vulnerability summary

CVE-2026-4877 is a medium (CVSS 5.3) Cross-site Scripting vulnerability in itsourcecode payroll_management_system. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 26-03-2026
    PublishedVulnerability first disclosed.
  2. 26-03-2026
    Last modifiedVulnerability information updated.

Description

A security flaw has been discovered in itsourcecode Payroll Management System up to 1.0. This affects an unknown function of the file /index.php. Performing a manipulation of the argument page results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

CVSS metrics

7 scores · 2 sources · 4 versions

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.18 pp

From 0.27% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Submit

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Itsourcecode1 product

1 vendor · 1 product

References

5 links