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TI-2021-05812 Aliases CVE-2021-22951GHSA-rhf5-f553-xg82

Authorization bypass in https://github.com/concrete5/concrete5

Priority LOW 35CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-639 and CWE-200.

Summary

Unauthorized individuals could view password protected files using view_inline in Concrete CMS (previously concrete 5) prior to version 8.5.7. Concrete CMS now checks to see if a file has a password in view_inline and, if it does, the file is not rendered.For version 8.5.6, the following mitigations were put in place a. restricting file types for view_inline to images only b. putting a warning in the file manager to advise users.Credit for discovery: "Solar Security Research Team"Concrete CMS security team CVSS scoring is 5.3: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NThis fix is also in Concrete version 9.0.0

Why it matters now

EPSS 0.0111 66th percentileScored 2026-11-07
Fix Fixed concrete5/core (Packagist): 8.5.7

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—https://github.com/concrete5/concrete5Fixed version Concrete CMS 8.5.7 and 9.0—No fix listedCNA
—concrete5/core (Packagist)before 8.5.78.5.7Patch availableGHSA-rhf5-f553-xg82
  • https://github.com/concrete5/concrete5 Vendor— Affected Fixed version Concrete CMS 8.5.7 and 9.0 Fixed in — No fix listed CNA
  • concrete5/core (Packagist) Vendor— Affected before 8.5.7 Fixed in 8.5.7 Patch available GHSA-rhf5-f553-xg82

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*before 8.5.7VulnerableConcrete CMS
  • cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* Versions before 8.5.7 Vulnerable ·Concrete CMS

Remediation

  • Fix · GHSA-rhf5-f553-xg82 concrete5/core (Packagist) Fixed in 8.5.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-22951
  2. 2026-10-03 Alias added: GHSA-rhf5-f553-xg82

References

Advisory 3

  • TI-2026-23602 ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager… CVSS 3.1MEDIUM 6.5
  • TI-2023-23992 A Cross Site Scripting (XSS) vulnerability in Concrete CMS from versions 9.2.0 to 9.2.2… CVSS 3.1MEDIUM 5.4
  • TI-2023-26495 Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because… CVSS 3.1CRITICAL 9.8
  • TI-2026-14907 Missing authorization in Concrete CMS CVSS 4.0HIGH 8.7
  • TI-2022-06200 Cleartext transmission of sensitive information in https://github.com/concrete5/concrete5 CVSS 3.1CRITICAL 9.8
  • TI-2021-17294 An issue was discovered in Concrete CMS through 8.5.5. CVSS 3.1CRITICAL 9.8
See all 197 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences