CVE-2021-26028 json
[20210308] - Core - Path Traversal within joomla/archive zip class
published 2021-03-04 5 y ago modified 2026-09-08 2 mo ago also BIT-joomla-2021-26028 , EUVD-2021-0710 , GHSA-vgwr-773q-7j3c
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist joomla/archive 1.1.10
- bitnami joomla 3.9.25
- joomla joomla! 3.9.25
Exploit prediction
1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | joomla/archive | <1.1.10 |
1.1.10 |
| bitnami | joomla | >=3.0.0, <3.9.25 |
3.9.25 |
Affected products
- Joomla! Project Joomla! CMS
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/joomla-framework/archive/commit/32c9009a1020d16bc1060c0d06339898b697cf2c
web
-
developer.joomla.org
/security-centre/848-20210308-core-path-traversal-within-joomla-archive-zip-class.html
vendor-advisory, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-26028
advisory, web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/joomla/archive/CVE-2021-26028.yaml
web
Sources
- CVE List CVE-2021-26028
- GitHub Advisory GHSA-vgwr-773q-7j3c
- NVD CVE-2021-26028
- OSV BIT-joomla-2021-26028
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.