CVE-2026-40384: Joomla! Core - [20260510] - Path traversal in com_media webservice endpoint
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.5%
EPSS score, percentile 43.9 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 5.9 Medium
CVSS v4.0 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
- Which versions are affected?
Affected
- 4.0.0-5.4.5
- 6.0.0-6.1.0
Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
What to do
Advisories and patches
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 4.0.0-5.4.5 |
| Affected | 6.0.0-6.1.0 |
Versions not listed are: unaffected.
Source: CVE List, as of . About the data.
About this vulnerability
An improper validation of the search parameter of the com_media files API endpoint leads to a path traversal vulnerability.
Summary: CVE record, as of .
- CISA has not added CVE-2026-40384 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
- The CVE record was published on 26 May 2026.
- The CVE record carries a CVSS v4.0 base score of 5.9 (Medium), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.5% (percentile 43.9), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
- CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact partial.
- The credits in the CVE record name Anthropic (Claude) as finder.
Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.
Description
Joomla! Core - [20260510] - Path traversal in com_media webservice endpoint
An improper validation of the search parameter of the com_media files API endpoint leads to a path traversal vulnerability.
Source: CVE List, as of . About the data.
Weakness
CWE-22, 1 CAPEC
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory
Attack patterns (CAPEC)
- CAPEC-126: Path Traversal
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
Known exploited Joomla vulnerabilities
- CVE-2023-23752: Joomla! Improper Access Control Vulnerability