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Critical severity9.8NVD Advisory· Published Sep 27, 2021· Updated Jun 17, 2026

CVE-2021-40098

CVE-2021-40098

Description

An issue was discovered in Concrete CMS through 8.5.5. Path Traversal leading to RCE via external form by adding a regular expression.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3

Concrete CMS/Concrete CMScpe-rescue
Concrete5/Concrete52 versions
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*range: <=8.5.5
- (no CPE)range: <=8.5.5

Patches

Vulnerability mechanics

References

2

documentation.concretecms.org/developers/introduction/version-history/856-release-notesnvdRelease NotesVendor Advisory
hackerone.com/reports/1102080nvdPermissions RequiredThird Party Advisory

News mentions

0

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