Cross-site scripting in https://github.com/concretecms/concretecms
Priority LOW 28CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 is vulnerable to XSS in the text input field since the result dashboard page output is not sanitized. The Concrete CMS security team has ranked this 4.2 with CVSS v3.1 vector AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N Thanks @_akbar_jafarli_ for reporting. Remediate by updating to Concrete CMS 8.5.10 and Concrete CMS 9.1.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00656 51st percentileScored 2026-11-07
Fix Fixed concrete5/concrete5 (Packagist): 8.5.10, 9.1.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/concretecms/concretecms | Fixed in Concrete CMS 8.5.10 and Concrete CMS 9.1.3 | — | No fix listed | CNA |
| — | concrete5/concrete5 (Packagist) | before 8.5.10 | 8.5.10 | Patch available | GHSA-xj33-8r43-r227 |
| — | concrete5/concrete5 (Packagist) | 9.0.0 to before 9.1.3 | 9.1.3 | Patch available | GHSA-xj33-8r43-r227 |
- https://github.com/concretecms/concretecms Vendor— Affected Fixed in Concrete CMS 8.5.10 and Concrete CMS 9.1.3 Fixed in — No fix listed CNA
- concrete5/concrete5 (Packagist) Vendor— Affected before 8.5.10 Fixed in 8.5.10 Patch available GHSA-xj33-8r43-r227
- concrete5/concrete5 (Packagist) Vendor— Affected 9.0.0 to before 9.1.3 Fixed in 9.1.3 Patch available GHSA-xj33-8r43-r227
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* | before 8.5.10; 9.0.0 – 9.1.2 | Vulnerable | Concrete CMS |
- cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* Versions before 8.5.10; 9.0.0 – 9.1.2 Vulnerable ·Concrete CMS
Remediation
- Fix · GHSA-xj33-8r43-r227 concrete5/concrete5 (Packagist) Fixed in 8.5.10 Advisory →
- Fix · GHSA-xj33-8r43-r227 concrete5/concrete5 (Packagist) Fixed in 9.1.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-43556
- 2026-10-03 Alias added: GHSA-xj33-8r43-r227
- 2026-10-13 EPSS moved to the 50th–90th percentile
References
Advisory 4
- https://documentation.concretecms.org/developers/introduction/version-history/8510-release-notes
- https://documentation.concretecms.org/developers/introduction/version-history/913-release-notes
- https://www.concretecms.org/about/project-news/security/concrete-cms-security-advisory-2022-10-31
- https://nvd.nist.gov/vuln/detail/CVE-2022-43556
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-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
Sources
- CVE-2022-43556 · CVE Program
- CVE-2022-43556 · NVD
- FIRST EPSS
- GHSA-xj33-8r43-r227 · GitHub Advisory Database · CC BY 4.0
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