CVE-2021-40108
HIGHCVSS 8.8/10EPSS 0.48%
Last modified
CVE-2021-40108 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
Description
An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. ccm_token is not verified on the ccm/calendar/dialogs/event/add/save endpoint.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Concretecms | Concrete Cms | < 8.5.6 |
References
- https://documentation.concretecms.org/developers/introduction/version-history/856-release-notesRelease Notes, Vendor Advisory
- https://hackerone.com/reports/1102018Permissions Required
- https://documentation.concretecms.org/developers/introduction/version-history/856-release-notesRelease Notes, Vendor Advisory
- https://hackerone.com/reports/1102018Permissions Required
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40108?
An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. ccm_token is not verified on the ccm/calendar/dialogs/event/add/save endpoint.
How severe is CVE-2021-40108?
CVE-2021-40108 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40108?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-40108?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST