6.5

CVE-2025-66103: revmakx wpcal.io Cross-site Scripting

CVSS: 6.5v3.1MediumDeferred
Published 30-12-2025Last modified 28-04-2026
Open JSON

Vulnerability summary

CVE-2025-66103 is a medium (CVSS 6.5) Cross-site Scripting vulnerability in revmakx wpcal.io. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.1% of scored vulnerabilities. Fixed in 0.9.5.10.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-12-2025
    PublishedVulnerability first disclosed.
  2. 28-04-2026
    Last modifiedVulnerability information updated.

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in revmakx WPCal.io wpcal allows DOM-Based XSS.This issue affects WPCal.io: from n/a through <= 0.9.5.9.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

+0.01 pp

From 0.22% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Revmakx1 product
Wordpress1 product
  • wpcal≤ 0.9.5.9 (fixed in 0.9.5.10)

2 vendors · 2 products

References

2 links