5.4

CVE-2024-21730: [20240702] - Core - Self-XSS in fancyselect list field layout

Modified
Published 09-07-2024Last modified 20-03-2025

Vulnerability summary

CVE-2024-21730 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in joomla! project joomla! cms. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 09-07-2024
    PublishedVulnerability first disclosed.
  2. 20-03-2025
    Last modifiedVulnerability information updated.

Description

The fancyselect list field layout does not correctly escape inputs, leading to a self-XSS vector.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.42% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Joomla1 product
  • joomla\!≥ 4.0.0, < 4.4.6 | ≥ 5.0.0, < 5.1.2
Joomla! project1 product

2 vendors · 2 products

References

1 links