High severity · published Jul 7, 2021
CVE-2021-26038
An issue was discovered in Joomla! 2.5.0 through 3.9.27
7.5
CVSS
1%
EPSS
No
On KEV
Description
An issue was discovered in Joomla! 2.5.0 through 3.9.27. Install action in com_installer lack the required hardcoded ACL checks for superusers. A default system is not affected cause the default ACL for com_installer is limited to super users already.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Joomla · Joomla
2.5.0 through 3.9.27 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26038
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26038
Vendor Advisory
https://developer.joomla.org/security-centre/859-20210704-core-privilege-escalation-through-com-installer.html
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