CVE-2021-22967 json
Exposure of sensitive information in concrete5/core
published 2021-11-19 4 y ago modified 2026-06-17 4 mo ago also GHSA-m2v2-8227-59f5 , EUVD-2021-2364
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
In Concrete CMS (formerly concrete 5) below 8.5.7, IDOR Allows Unauthenticated User to Access Restricted Files If Allowed to Add Message to a Conversation.To remediate this, a check was added to verify a user has permissions to view files before attaching the files to a message in "add / edit message”.Concrete CMS security team gave this a CVSS v3.1 score of 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCredit for discovery Adrian H
Patch / fix
- packagist concrete5/core 8.5.7
- concretecms concrete_cms 8.5.7
Exploit prediction
1.15% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | concrete5/core | <8.5.7 |
8.5.7 |
Affected products
- n/a https://github.com/concrete5/concrete5
Classification
References
-
documentation.concretecms.org
/developers/introduction/version-history/857-release-notes
web, release-notes, vendor-advisory
-
hackerone.com
/reports/869612
web, permissions-required
-
nvd.nist.gov
/vuln/detail/CVE-2021-22967
advisory
Sources
- CVE List CVE-2021-22967
- GitHub Advisory GHSA-m2v2-8227-59f5
- NVD CVE-2021-22967
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