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 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
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
hackeroneCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 59%
VendorProductVersion
concretecmsconcrete_cms
𝑥
< 8.5.5
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://documentation.concretecms.org/developers/introduction/version-history/855-release-notes
https://hackerone.com/reports/863221
https://documentation.concretecms.org/developers/introduction/version-history/855-release-notes
https://hackerone.com/reports/863221