Critical severity · published Oct 7, 2021
CVE-2021-22958
A Server-Side Request Forgery vulnerability was found in concrete5 < 8.5.5 that allowed a decimal notation encoded IP address to bypass the limitations in place for localhost…
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
A Server-Side Request Forgery vulnerability was found in concrete5 < 8.5.5 that allowed a decimal notation encoded IP address to bypass the limitations in place for localhost allowing interaction with local services. Impact can vary depending on services exposed.CVSSv2.0 AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Concrete Cms · Concretecms
before 8.5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22958
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22958
Release Notes
https://documentation.concretecms.org/developers/introduction/version-history/855-release-notes
Issue Tracking
https://hackerone.com/reports/863221
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