6.1

CVE-2021-24241: advancedcustomfields advanced_custom_fields Cross-site Scripting

CVSS: 6.1v3.1MediumModified
Published 22-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24241 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in advancedcustomfields advanced_custom_fields. EPSS estimates a 1.39% chance of exploitation in the next 30 days, higher than 72% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
1.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, reference

Timeline

  1. 22-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.39%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.39% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Reflected Xss In Wordpress For Acf Pro Before 5.9.1 Plugin

    Maturity: poc

  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Advancedcustomfields1 product
Unknown1 product
Wordpress1 product
  • advanced-custom-fields-pro< 5.9.1

3 vendors · 3 products

References

4 links