Cleartext transmission of sensitive information in https://github.com/concrete5/concrete5
Priority MEDIUM 46CWE-319Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-319.
Summary
Concrete CMS Versions 9.0.0 through 9.0.2 and 8.5.7 and below can download zip files over HTTP and execute code from those zip files which could lead to an RCE. Fixed by enforcing ‘concrete_secure’ instead of ‘concrete’. Concrete now only makes requests over https even a request comes in via http. Concrete CMS security team ranked this 8 with CVSS v3.1 vector: AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Credit goes to Anna for reporting HackerOne 1482520.
Why it matters now
EPSS 0.01768 78th percentileScored 2026-11-07
Fix Fixed concrete5/core (Packagist): 9.1.0, 8.5.8
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/concrete5/concrete5 | Remediated in Concrete CMS 8.5.8 and 9.1.0. Affected Versions are Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 | — | No fix listed | CNA |
| — | concrete5/core (Packagist) | 9.0.0 to before 9.1.0 | 9.1.0 | Patch available | GHSA-6xc4-7fmm-65q2 |
| — | concrete5/core (Packagist) | before 8.5.8 | 8.5.8 | Patch available | GHSA-6xc4-7fmm-65q2 |
- https://github.com/concrete5/concrete5 Vendor— Affected Remediated in Concrete CMS 8.5.8 and 9.1.0. Affected Versions are Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 Fixed in — No fix listed CNA
- concrete5/core (Packagist) Vendor— Affected 9.0.0 to before 9.1.0 Fixed in 9.1.0 Patch available GHSA-6xc4-7fmm-65q2
- concrete5/core (Packagist) Vendor— Affected before 8.5.8 Fixed in 8.5.8 Patch available GHSA-6xc4-7fmm-65q2
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* | before 8.5.8; 9.0.0 to before 9.1.0 | Vulnerable | Concrete CMS |
- cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* Versions before 8.5.8; 9.0.0 to before 9.1.0 Vulnerable ·Concrete CMS
Remediation
- Fix · GHSA-6xc4-7fmm-65q2 concrete5/core (Packagist) Fixed in 9.1.0 Advisory →
- Fix · GHSA-6xc4-7fmm-65q2 concrete5/core (Packagist) Fixed in 8.5.8 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-21829
- 2026-10-03 Alias added: GHSA-6xc4-7fmm-65q2
References
Advisory 2
Other 7
- https://hackerone.com/reports/1482520%2C
- https://documentation.concretecms.org/developers/introduction/version-history/910-release-notes%2C
- https://hackerone.com/reports/1482520
- https://documentation.concretecms.org/developers/introduction/version-history/910-release-notes
- https://documentation.concretecms.org/developers/introduction/version-history/910-release-notes,
- https://github.com/concretecms/concretecms-core
- https://hackerone.com/reports/1482520,
More Concrete Cms vulnerabilities
- 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-2021-17294 An issue was discovered in Concrete CMS through 8.5.5. CVSS 3.1CRITICAL 9.8
- TI-2021-05819 Server-side request forgery in https://github.com/concrete5/concrete5 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2022-21829 · CVE Program
- CVE-2022-21829 · NVD
- FIRST EPSS
- GHSA-6xc4-7fmm-65q2 · GitHub Advisory Database · CC BY 4.0
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