CVE-2021-26028: joomla! project joomla! cms Path Traversal
CVSS: 5.5v3.1MediumModified
Published 04-03-2021Last modified 25-02-2026
Vulnerability summary
CVE-2021-26028 is a medium (CVSS 5.5) Path Traversal vulnerability in joomla! project joomla! cms. EPSS estimates a 1.01% chance of exploitation in the next 30 days, higher than 62.7% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
1.01%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-03-2021PublishedVulnerability first disclosed.
- 25-02-2026Last modifiedVulnerability information updated.
Description
An issue was discovered in Joomla! 3.0.0 through 3.9.24. Extracting an specifilcy crafted zip package could write files outside of the intended path.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.01%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.01% on 21-09-2026
21-09-202621-10-2026
EPSS score1.01%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Joomla1 product
- joomla\!≥ 3.0.0, < 3.9.25
Joomla! project1 product
- joomla! cms3.0.0-3.9.24
2 vendors · 2 products