6.1

CVE-2021-24876: roundupwp registrations_for_the_events_calendar Cross-site Scripting

CVSS: 6.1v3.1MediumModified
Published 29-11-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24876 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in roundupwp registrations_for_the_events_calendar. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 67.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
1.20%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 29-11-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The Registrations for the Events Calendar WordPress plugin before 2.7.5 does not escape the v parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.20%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

+0.03 pp

From 1.17% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Roundupwp1 product
Unknown1 product
Wordpress1 product
  • registrations-for-the-events-calendar≤ 2.7.4 (fixed in 2.7.5)

3 vendors · 3 products

References

2 links