CVE-2023-28477
Stored cross site scripting on API integration
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
CVE-2023-28477- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2023-1425
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
EUVD-2023-1425- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xfmj-r86m-j2hr
Stored cross site scripting on API integration
Concrete CMS (previously concrete5) before 9.2 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
GHSA-xfmj-r86m-j2hr- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
CVE-2023-28477- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Concrete CMS (previously concrete5) versions 8.5.12 and below, and 9.0 through 9.1.3 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
CVE-2023-28477- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:U/UI:N - Updated
- 2026-11-02
OSVGHSA-xfmj-r86m-j2hr
Stored cross site scripting on API integration
Concrete CMS (previously concrete5) before 9.2 is vulnerable to stored XSS on API Integrations via the name parameter.
- Record
GHSA-xfmj-r86m-j2hr- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
concrete5/concrete5Packagist |
before 9.2.0 | 9.2.0 |
concrete5/concrete5Packagist |
before 9.2.0, plus listed versions 8.08.0.18.0.28.0.38.1.0 Show 45 moreShow less8.2.08.2.0RC28.2.18.3.08.3.18.3.28.4.08.4.0RC38.4.0RC48.4.18.4.28.4.38.4.48.4.58.5.08.5.0RC18.5.0RC28.5.18.5.108.5.118.5.128.5.138.5.148.5.158.5.168.5.178.5.188.5.198.5.28.5.208.5.218.5.38.5.48.5.58.5.68.5.6RC18.5.78.5.88.5.99.0.09.0.0RC19.0.0RC39.0.0RC49.0.19.0.2 |
9.2.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-28477 is a medium vulnerability (CVSS 5.5) in Concretecms Concrete Cms, published April 28, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 48th percentile. Fixed in concrete5/concrete5 9.2.0.
References
concretecms.com
concretecms.org/about/project-news/security/concrete-cms-security-advisory-2023-04-20
nvd.nist.gov/vuln/detail/CVE-2023-28477
github.com/concretecms/concretecms/commit/546cef6ec29208d5c079113635cd6e6b250e9f7c
Left out here: 5 versions. The JSON record has them.