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GHSA-8c7c-h7px-267g

Concrete CMS is vulnerable to IDOR in surveys

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-8337

Packages

EcosystemPackageAffectedFixed in
Packagist concrete5/concrete5 < 9.5.1 9.5.1

Details

As written in the advisory (Markdown source, shown as plain text).

Concrete CMS 9.5.0 and below is vulnerable to IDOR in surveys. To be vulnerable, a site would have to be configured in such a way that both public and private surveys are present on the site. An unauthenticated attacker can vote in the restricted survey by submitting the restricted optionID through the public survey’s endpoint.

References

External links from the advisory. They lead to third-party sites.